October 2006 Engagement in GCSE Mathematics 1 Introduction In July 2005 an AST from Purbeck School attended an Ofsted conference on Engagement in Mathematics at GCSE. Following her feedback to the Inspector for Mathematics a working group was established in January 2006. The working group consisted of mathematics ASTs and teachers nominated by their head of department from a selection of schools in Dorset. There was no finance to support this initiative and I am very grateful to the schools involved for releasing their teachers for meetings during the school day. It was agreed that in order to keep it manageable each teacher initially identified one group in year 10 or 11 to work with. The initial aim was to ensure that teaching in Key Stage 4 would reflect what was working in Key Stage 3. Initially the group focused on ensuring that the starter activity was always engaging and different from the existing start to Key Stage 4 mathematics lessons. The group met on a total of three occasions but there was the opportunity to share and communicate between sessions through email. All teachers felt that there had been a positive response from both the pupils and their colleagues. In fact there are contributions from several teachers in Gillingham School. The ideas quickly spread to be whole lesson ideas rather than just starter activities. The booklet and CDROM have case studies with an activity outline and the resources used. For ease of use the booklet has been divided into 6 sections. Section 1 provides guidance on questioning which will aid successful use of the activities in the booklet. At the end of each subject section there are examples of additional resources which the group have used but not written up case studies for. The CDROM contains a master copy of the booklet and copies of all the resources referred to in the booklet. A copy of the booklet and resources will also be placed on the county website and the SWGFL portal. The working group hope that you will find this resource valuable and would be grateful if you could forward your own ideas to be added to the website resource bank. Engagement in GCSE Mathematics 2 Thank you to all the staff involved and to the management of Purbeck School for allowing Marie to attend the original course and for hosting the working group. Thank you also to Gillingham, Lytchett Minster and Shaftesbury schools for supporting the project by releasing staff to attend the working group meetings. Thank you also to Budmouth Technology College and Woodroffe for releasing their ASTs to work on the project. Please note : The activity sheets and case studies were completed under the three tier system and may need adjustment to suit the new two tier teaching for GCSE. Working Group Members Budmouth Technology College Gillingham Lytchett Minster Purbeck Queen Elizabeth Shaftesbury Woodroffe Amy Harris * Lucy Neil Sally Burt Marie Simmonds ** Jane Livesey * (now Secondary Stratgey Mathematics Consultant) Clare Davenport Jennie Golding * * Dorset LA ASTs ** School based AST who attended the original Ofsted course. Angela Easton Inspector for Mathematics Children’s Services Dorset County Council Engagement in GCSE Mathematics 3 Index Page Section 1 Questioning 5 -17 Section 2 Number 18 - 39 Section 3 Algebra 40 - 71 Section 4 Shape and space 72 - 78 Section 5 Handling Data 79 - 82 Section 6 Probability 83 - 101 Bibliography Engagement in GCSE Mathematics 102 4 SECTION 1 – QUESTIONING Effective Questioning and Intervention Discussion paper by Angela Easton ‘Teachers may ask around 100 questions per hour’ but as teachers we must try to ensure that our questioning is effective and enables pupils to make gains in their learning. Effective questioning and intervention can take place with individuals, groups and whole classes. Good teacher listening skills are essential for effective questioning; listening to what pupils actually say and responding by encouraging and offering supportive statements or prompts. Pupils must be encouraged to question as well as to answer. Pupil discussion is an area where teachers must take care not to intervene too often, too soon or too strongly as it prevents real discussion and the ability of pupils to think and express themselves. There are many types of questions and I believe we have come a long way since educators were claiming that there were just two types of question ‘open’ and ‘closed’ (although the National Strategies for too long have continued to use this simplistic idea). I found Don Stewart’s categories of fact questions which test knowledge and thought questions which create knowledge, particularly useful to analyse both my own questioning and that of my colleagues when a head of department. He further divides these into 6 areas which he claims move from lower to higher order questions. See appendix 1 in this section. Teachers should plan their higher order questions which support and enhance the learning taking place in the classroom. The focus of my planning was always questions which would enable me to assess learning whether it was for the beginning, end or during the main part of the lesson. Planning key questions I believe is vital to ensure that the learning you aimed for during the lesson has taken place. I personally have always tried to be careful in the use of the word ‘why’ because although it is useful to explore pupils understanding it can also be very threatening. To aid my use of this I would often have the pupils working in pairs or groups so that a spokesperson was supported by at least one other pupil. Some teachers are naturally able to support and guide pupils’ learning through the good use of questioning and others require support and guidance in order to achieve this. The observation of good classroom practitioners in mathematics always reveals a good relationship between the teacher and the pupils and the effective use of a variety of types of questions as well as good supporting strategies for pupils. Engagement in GCSE Mathematics 5 In order for the activities in this booklet and contained on the CD-ROM to have any impact in the classroom the teachers using them will need to be able to support pupils working collaboratively, intervene appropriately and use questions very effectively. Many of these activities require pupils to discuss working in pairs or groups. D James Dillon defines discussion as ‘ a group address to a question in common’ The results of his research and that of David Wood suggests that frequent questioning by the teacher inhibits rather than encourages discussion i.e. the more teachers question the less pupils say. They went on to specifically recommend against questioning by the teacher during a discussion because they depress pupil thought and talk. Wood’s research shows that pupils respond at greater length and with greater initiative (twice as great) to statements rather than questions. They found that the less a teacher interrogates pupils the more likely they are to listen to, make contributions about and ask questions of pupils say. In the appendix attached is some additional guidance to develop teachers questioning skills. In addition in the booklet and on the CD-ROM you will find guidance used by Gillingham school. I hope you will find the questioning and discussion resources useful. Please contact me if you would like to discuss or explore this further. Two particularly useful books for developing questioning and discussion skills published by ATM are: Questions and Prompts for Mathematical Thinking Watson and Mason ISBN 1 898611 05X £9:00 (Member £6:75) Thinkers ISBN 1 898611 26 2 Bills, Bills, Watson and Mason £10:00 (Members £7:50) References to specific questions from the ‘Thinkers’ book has been added as an appendix to this section of the booklet and in the question section of resources on the CD-ROM Angela Easton September 2006 Engagement in GCSE Mathematics 6 Appendix 1 Lower Order Questions Recall: of specifics; what seen/read. Data recall; facts, procedures, classifications. Knowledge of theories. Examples include ‘what’ ‘when’ ‘how’ ‘name’ ‘distinguish’ Comprehension: understanding of information as evidenced by; comparing, simple descriptions, providing further examples of principles, extrapolation etc Examples ‘compare…’ ‘Give an example of …’ ‘predict …’ ‘rearrange …’ ‘hypothesise … ‘ Application: apply rules/knowledge and techniques to solve simple ‘problems’ with single right/wrong answers. Interpret and apply information. Examples ‘consider …’ ‘ tell us …’ ‘show your working to …’ ‘ construct’ ‘ solve’ ‘demonstrate’ ‘show next’ ‘ check out’ Synthesis: put together parts or elements to make a complex whole. Global predictions; build general theories; make interesting juxtapositions of ideas and images; complex reasoning; make broader classifications and categories. Examples ‘write about …’ ‘create …’ ‘develop…’ ‘Suggest reasons’ ‘derive’ Evaluation: judge the quality of the ideas; rationally based opinions; discriminatory – pros and cons considered and weighed. Examples ‘why’ ‘defend’ ‘is this the best…’ is this the only…’ Higher Order Questions Don Stewart Questioning January 1995 (adapted from Bloom’s taxonomy 1956) Engagement in GCSE Mathematics 7 Appendix 2 Some General Questions What is this about do you think? Anything else you know about this? Can you give me an example? How did you make a start at this? Can you explain to me what you think at this moment? Can you suggest an alternative point of view? How convinced are you by this argument? Can you say that in a slightly different way? Be more precise? What do you mean by …? Do you think this is a reasonable argument? What’s your view? What supports it? What is this saying, do you think, in a nutshell? What can you tell me about this? That’s an interesting theory/decision – how did you come to it? What similarities/differences do you think there are between these? Can you think of a counter argument? What is it you are not sure about? What do you think will happen next? How could we be clearer about this? What else do you need to know? Which is the easiest/simplest view? Why do you think so? Engagement in GCSE Mathematics 8 What might we look at next? What do you think this word means? Let’s see, can we break this down a bit? Where might you have gone wrong on this? How do you work these out in general? Engagement in GCSE Mathematics 9 Appendix 3 Questioning Gambits (1) Things teachers say I don’t like you shouting out, as it prevents others from joining in. Yes, that seems right doesn’t it? Has anyone else anything to add? OK, say it in your own words then. Who hasn’t answered/spoken yet? Shhh! (S)he can do it. Did we do/what did we say about … I can’t remember. You may confer with your partner. Would you mind telling me, from your perspective, what you’ve done? Where did we get to? This seems important doesn’t it? If that is so what follows? If you haven’t got a clear idea, half of one will do nicely. I know it’s not easy to say what you are thinking but please try – I’m interested. What questions do you have about this work …? Don’t just give me an answer try to give your reason as well. Can anyone pick up on what … said? What general issues have we/you been considering? Let’s have a look at an idea you are not too sure about. What weren’t you too sure about this lesson? What do you need to remember/be aware of from this lesson? What do you think we should look at next? Engagement in GCSE Mathematics 10 Appendix 4 Questioning Gambits (2) interesting things teachers do Gets pupils/groups to explain their views (after rehearsal) to the class. The class not the teacher ask the questions. Asks a regular stock of questions so that the pupils become familiar with them and ask themselves as the teacher fades out. Asks a question and then does not immediately simplify it with a string of even simpler questions (some pupils are wise to this and wait) Sits down when they have asked a question and waits for the answer. Asks pupils to say ‘squeak’ or scratch their chin if they do not understand something/were not listening at a vital point. Tilt their head to one side/raises their eyebrows when looking at someone to invite them to contribute. Collects ideas on the board (generally without pupils’ names attached) to record the development of ideas and to show interest. Collects a range of answers from the class without indicating yes or no/right or wrong. Says when a question is hard – and doesn’t say when it is easy. Writes tasks and questions on the board as well as saying them. Asks the class to think of an example of a hard and an easy question on the topic they have just covered. Uses ‘inviting’ gestures (nods, smiles etc) to encourage talk – i.e. routine talk maintenance work in any conversation Uses tag questions at the end of statements (possibly with rising intonation) to put them up for confirmation or to be modified e.g. ‘This is one reason for using pie charts isn’t it?’ Uses rising intonation to turn statements into questions – requesting confirmation. Uses ‘attention’ beginnings e.g. ‘this is interesting…’ or ‘I’m interested in/by…’ teacher appears wondering and curious themselves. Keeps an interesting tone to questions – doesn’t let them fizzle out at the end of the sentence. Engagement in GCSE Mathematics 11 Moves around the classroom to change perspective when asking questionsmakes sure that they have looked at each pupil during the lesson and that no pupil has been overlooked. Greets pupils at the door as they enter, remembering interesting things e.g. plays in school team etc setting the atmosphere Stops any pupil who calls out, speaks across another or who whispers the answer to another. Thanks the pupils when it has been a ‘good lesson’. Acknowledges effort and attempts by pupils to join in. Engagement in GCSE Mathematics 12 Appendix 5 Listening to what pupils say – encouraging and supporting ‘Open/probing’ questions or phrases invite a lengthy response and encourage the airing of sometimes tentative views. How the teacher responds will clearly affect willingness to offer ideas. Being encouraging, try to: Suspend your own point of view (not guess what is in my head) Listen to what they are saying Try to see what they are seeing Focus on content rather than delivery (listen hard and long without interruption) Look at them and make encouraging signs: nods or mms whether they appear to be right or wrong. Ask them to repeat what they have said or clarify a point Give them time and be patient. Four ‘C’s of active listening: Confirm that you have received what is said – repeat things back to check that you have got it right. Check any assumptions that you have made: ‘It seems to me that …’ ‘am I right in thinking that…’ ‘I suppose you are thinking that…’ Clarify any points that you are uncertain about: ‘When you said ... can you say a little more about that?’ ‘What did you mean by…?’ ‘I didn’t quite get what you said about …, can you say it again /in a different way? Consider that they have some reason for what they are saying and try to find out what it is. Paraphrasing Helps them to listen carefully Affirms that you are listening and interested in what they say. Provides opportunity for correction (with care), editing and clarification. Should focus on what they have said and be brief. Can involve other class members. Other thoughts Move around the room so pupils can ask questions more privately. Squat/sit down when talking to pupils individually or in small groups. Asking ‘Are you sure?’ or ‘Why’ is often interpreted as ‘I have got it wrong’ Asking ‘Is everyone OK on that?’ is a non-question! Encourage pupils to build on/criticise what went before. Talk to all pupils as intelligent beings. Ask questions that you are interested in. Engagement in GCSE Mathematics 13 Appendix 6 Discussion: alternatives to questioning Alternatives to questioning Make statements – say what you think in relation to what the pupil has just said. Pupil questions – invite or allow a pupil to ask a question in relation to what the speaker has just said. Signals – indicate that you have heard what the pupil has said without yourself taking the floor. Possibly pass the ‘floor’ around to someone else, by brief phrase, gesture or word. Silences say nothing at all but maintain a deliberate silence for at least three seconds until the original speaker resumes or someone else joins in. What sort of statements might I make? A thought that occurs - either complementary or a counter view A reflective statement: try to re-phrase or just repeat what a pupil has said giving the pupil the chance to confirm or expand on what they have just said or another pupil the chance to intercede. Simply describe your state of mind: ‘I’m confused by what you said about…’ or ‘I disagree with what you are saying about…’ or ‘That makes sense.’ Statement of interest, ‘I’m interested in what you said about ..’ or ‘I’m interested in your definition of …’ or ‘It would help if I had an example …’ or ‘I’d like to hear more on your views about …’. Speaker referral: relate what one pupil has said to what another has said, ‘That’s similar to what … was saying’ or ‘that seems to disagree with what … was saying before.’ Self report, ‘I have trouble keeping track of the …’ or ‘I can’t quite imagine what that means.’ Engagement in GCSE Mathematics 14 APPENDIX 7 Questions to Extend Understanding and Reasoning Page references ATM Thinkers Booklet where you will find some very good question examples and stems. An invaluable book for all departments. Number Page number 7 9 10 12 13 14 16 17 18 19 20 21 23 24 25 26 27 Algebra Page numbers 7 9 10 12 14 16 18 19 20 22 23 24 25 Engagement in GCSE Mathematics Question numbers 15, 22, 24, 1, 2, 3, 5, 6, 8, 9, 13, 4, 14, 15, 16, 17 1, 2, 4, 7, 10, 11, 13 2, 5, 6, 7, 8, 9, 2,3,4,5,6,7,8, 13, 15, 1 – 11, 13, 14, 18 1, 2, 3, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 10, 17, 18, 19, 20, 22 1, 2, 3, 4, 5, 12 1, 2, 4, 5, 6, 7, 1, 5, 8, 1, 2, 3, 6, 9 1, 2, 3, 1, 2, 5, 6, 12 Question numbers 25, 26, 27, 28 8, 9, 10, 12, 14, 15, 16, 19, 20, 9 6, 14, 15, 18 10, 11, 16 15, 17, 6, 17, 13, 14, 15, 16, 6,8, 10, 11, 8, 9 12,13, 7, 15 27 7, 8, 9, Shape and Space Page numbers Question numbers 7 16, 17, 18, 23, 29 9 4, 7, 11 10 10, 11, 17, 22 12 7, 8, 13 18, 19 14 3, 9, 16, 17, 19 16 3, 4, 14, 15, 17, 18 17 1, 9 10, 11, 14, 15, 18 16 19 4, 5, 12, 13, 14, 15, 20 9, 11,12, 21, 22 7, 9, 23 10. 11 24 3, 4, 7, 9, 10, 25 4, 5, 9, 10, 11 27 3, 13, 14 Handling Data – Statistics Page numbers Question numbers 7 19 10 21 12 5, 6, 19 11, 16, 24 11, 27 4, Handling Data – Probability Page numbers Question numbers 7 20, 21 10 18, 14 12 16 12, 13, 17 12, 18 12 24 6, Engagement in GCSE Mathematics 16 How do you know these are good question stems? x x x x x x x x x x x x x x x x What would happen (to the median) if (we added x to the data) What are the key points … What made you decide to do it that way? What do you think they have done wrong? What mistakes do you think people would make? What (other) information do you need to answer the question? What have we been working on that might help us with this problem? What assumptions are we making? What techniques would help? Why do you think some people might have a different answer? Why is that wrong? Why isn’t .. (half of 8 x 6, 4 x 3) Why are these two (graphs) similar / different? Why do all (of these equations) give the same answer? Why is this useful (to round numbers)? Why do you think that? x x x x x x x x x x x x x x x x x How do we know you are right How can we be sure that? How would you explain why (1.5 is bigger than 1.14) How would you explain to someone (how to construct a triangle) How do you know we have every possibility (Probability) How do we know that this is a sensible/reasonable answer? How do we know this is the best solution? How could you do this more efficiently? Write down values that satisfy (x+y=10) Give me an example of another (equation with these values) Is this always, sometimes or never true? In what ways can we …. Write three questions that would test what your neighbour has learnt this lesson .. Convince me that you’re right …. Would this method always work? Why? Show me ways of representing (y = 5) Find a number pattern and explain it How do you know we have every possibility? © Gillingham School Mathematics Department Engagement in GCSE Mathematics 17 SECTION 2 - NUMBER Title: True/False Area of Mathematics: Entry level: Any Foundation* But can be adapted, including to AL Examination Board: Any Modular* Linear* Outline of resource and how it was used including key questions: A number of cards are produced – can be by students, but easier to target if by teacher. 20 often works well. Each card reflects a common misconception, eg ¼ = 0.4. An exemplar set is given. Students work individually, in pairs or in groups to decide whether the statement as given is True or False. During feedback they have to justify their choice, with credit given for justification as well as ‘correct’ placement. Can be done as a written exercise but rich source of discussion. Student production of cards slow but involves measuring as well as lots of talking. Differentiates well: students want to make cards as hard as they confidently can. Cards can be written ‘for year 8’ or for other groups in the class. ‘How do you know?’ or ‘Convince me!’ used lots in this. Name: Jennie Golding School: Woodroffe Date: June 2006 *Please delete as appropriate Please indicate if you have an attachment : - True or False cards Engagement in GCSE Mathematics 18 True or False Cards 0.7 = 7% 1/5 = 5% 6 is a factor of 12 2.8<2.08 If y-3=6 then y=9 500m = 5 km The sum of 2 numbers is never the same as their product 24 is a multiple of 6 9 is a prime number ¾ = 0.34 A square with perimeter 12 cm has area 9 cm2 The angles in a quadrilateral add up to 360° 30% of £15 is £4.50 47mm = 4.7cm If 5z=20 then z=15 The mean of 3,3,4 and 6 is 3 Engagement in GCSE Mathematics 19 Title: Review of Standard Form Area of Mathematics: Standard Form Entry level: Intermediate* Examination Board: AQA Modular* Outline of resource and how it was used including key questions: Brain storm starter, the class were asked to identify answers to two questions, `what do you know about standard form’ and `what questions could be asked’. Class were given 3 minutes to think about it then ideas were collected onto the board. The class identified information from how to write numbers in standard form to questions on dividing numbers in standard form. This starter requires very little input from the teacher, and promotes the class in being active learners and helps to reinforce each technique needed. We discussed ideas about how many marks might be given for different questions and alternative ways that questions can be written even though they are asking the same thing. The class then worked on some exam questions and as a plenary we worked through difficult standard form questions which involved percentages etc. Name: Marie Simmonds School: Purbeck School Date: 19/05/06 *Please delete as appropriate Please indicate if you have an attachment : - Engagement in GCSE Mathematics Standard Form PowerPoint MS Standard Form Word Worksheet MS 20 4.8x104 0.049 4.9x10-2 488.8 4.888x102 0.498 4.98x10-1 48700000 4.87x107 4.8 4.8x100 0.0000499 4.99x10-5 4.89x103 Engagement in GCSE Mathematics 4890 48000 21 Power point resource on CD see copy below What do you know about Standard Form? What types of questions might you be asked? A resource sheet of examination questions at the appropriate level and for the relevant board will also be needed. Engagement in GCSE Mathematics 22 Title: Understanding and applying the rules of indices Area of Mathematics: Number and Algebra Entry level: Intermediate* Examination Board: EdExcel Linear* Outline of resource and how it was used including key questions: Using the hexagonal jigsaw approach (as detailed in the Standards Unit) I gave my students a blank with 8 equilateral triangles on it. Having been taught the rules of indices in the previous lesson, I asked them to design matching questions and answers which when adjoined would create a jigsaw. The students worked in groups and had been asked to design some appropriate questions for homework. I encouraged the students to use the same variable throughout their jigsaw to make the jigsaw harder to solve. Some students stuck with questions and simplified answers such as y5 x y3 = y8 whereas others were more inventive and posed two questions which both simplified to give the same expression. Some students used numbers as the base and evaluated some of the answers to give a numerical jigsaw. The two spare triangles were used for “red herrings”. When groups were confident with their rough copy, I assigned a new copy on coloured card ensuring I had a different colour for each group in the class. When cut, these jigsaws then provide a starter for a future lesson and with the group’s name on the back, also bring about some good discussion. Name: Amy Harris School: Budmouth Technlogy College Date: June 2006 *Please delete as appropriate Engagement in GCSE Mathematics 23 Title: Powers Review Area of Mathematics: Number Entry level: Intermediate* Examination Board: AQA Modular* Outline of resource and how it was used including key questions: Extended plenary task done in pairs. Exam questions used in a quiz style plenary to assess the class’s ability to answer exam questions on powers at the end of teaching the topic. Class were given a sheet to complete with the correct number of answer spaces available to them, merit stickers used as prizes. The questions were then given as homework/revision task a week later to reinforce the techniques needed. Name: Marie Simmonds School: Purbeck Date: 24/01/06 *Please delete as appropriate Please indicate if you have an attachment : - Engagement in GCSE Mathematics Powers Review word MS Powers Homework word MS Powers Review Answer sheet MS 24 1. Work out the value of (a) 53 .................................................. (1) (b) 104 .................................................. (1) 2. Use the calculation 58.5 × 27 = 1579.5 to write down the answer to (a) 585 × 27 ................................... (1) (b) 1579.5 ÷ 27 ................................... (1) (c) 585 × 0.027 ................................... (1) 3. 36 expressed as a product of its prime factors is 22 × 32 (a) Express 45 as a product of its prime factors. ....................................................... ....................................................... ....................................................... (3) (b) What is the Highest Common Factor (HCF) of 36 and 45? ....................................................... ....................................................... (1) (c) What is the Least Common Multiple (LCM) of 36 and 45? ....................................................... Engagement in GCSE Mathematics 25 ....................................................... (1) 4. (a) 407 u 2.91 0.611 Estimate the value of ....................................................... ................................................................................................ ............ (3) (b) Write down the value of 64 1 2 ....................................................... (1) 5. Work out the value of 53 ҟ 43. .............................................................. .............................................................. (2) 6. (a) Work out 12 – (3 + 7) ....................................................... (1) (b) Put brackets in each of these calculations to make them correct. (i) 18 – 4 – 2 = 16 (ii) 3 (iii) 20 ÷ 5 – 3 = 10 + 4 × 5 = 35 (3) 7. (a) Work out the cube of 6. .....................………………… ……………………………………………………………… (1) (b) Work out 0.22 Engagement in GCSE Mathematics 26 .....................…………………… (1) (c) A list of numbers is given below. 15 16 19 27 34 42 45 From this list, write down (i) a cube number, ..........……………………… (1) (ii) a prime number. ..........……………………… (1) 8. Use the calculation 487 × 3.53 = 1719.11 to find the value of (a) 487 × 0.0353 ......................…………………… (1) (b) 48700 × 0.00353 ......................…………………… (1) 9. (a) Express 144 as the product of its prime factors. Write your answer in index form. ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... (3) (b) Find the Highest Common Factor (HCF) of 60 and 144. ....................................................... Engagement in GCSE Mathematics 27 ....................................................... ....................................................... (2) 10. Write down the value of 3 27 ....................................................... (1) Engagement in GCSE Mathematics 28 Title: Percentage/Fraction Fit Area of Mathematics: Number Entry level: Foundation* Or can be adapted Examination Board: Any Modular* Linear* Outline of resource and how it was used including key questions: Students work individually, in pairs or threes. Preface either version with 2 or 3 examples explained by students. Simpler version: Pairs of students have one component card, one master card with spaces. They complete each sentence with one card from each component set. Pairs have to convince each other, since either may be called upon to explain their solution. Harder version: Students create their own 6 (or 12, depending on stickability and fluency) statements about percentages or fractions, of the form ‘10% of 50 is 5’ on a master sheet (attached). The components are then cut up, the words discarded and another group fits as many components as they can into a blank grid. The object of the game is to maximise the number of components fitted. The game can of course be replayed, by this or another group. It’s worth pointing out to the creators that they make the questions re-fit harder by using similar numbers in several statements. This version tends to differentiate itself, especially if students are designing for someone else to play (and find hard!) In both cases, statements can be checked using calculators; if calculators are allowed in creation, statements can be made quite tricky. Demanding 5 statements about fractions, 5 statements about %s adds to difficulty. Name: Jennie Golding School: Woodroffe Engagement in GCSE Mathematics Date: June 2006 29 FRACTION/PERCENTAGE FIT of Of Of Of Of Of is is is is is is 150 500 1 60 200 of of of of of of 150 1000 50 6000 is is is is is is 40 10 Use one card from each set to complete the sentences: Set A 50% Ҁ 1/5 100% 1/3 25% 200% 75% ½ 1/10 ¼ 10% Set B 36 100 600 80 10 500 200 1000 150 300 50 2000 There is also a master fraction/percentage fit table and cards included on the CDROM. Engagement in GCSE Mathematics 30 Percentage increase and decrease using decimal multipliers Area of Mathematics: Number Entry level: Intermediate* Examination Board: EdExcel Linear* Outline of resource and how it was used including key questions: Starter or plenary activities You can either use pupil whiteboards and use these boards purely as the target boards containing answers to your questions OR you can use them to play splat. I play the first to five successful splats and have two pairs competing at the same time. I use fly squatters as the splat sticks and start by posing the questions myself but then ask the rest of the class to provide the questions. The first board is to reinforce the number bonds to 100 and hence aid understanding that a 20% decrease can be calculated as 80% of the original. The second board is a selection of decimal multipliers which provide both decreases and increases e.g. “Can you find me a multiplier which would give an increase of 2%?” The answers 1.2 and 1.02 are deliberately placed to enhance discussion after the activity. Key question “Why do some of the decimal multipliers have 3dp?” “What percentage changes would they give?” Which multiplier can be used to calculate VAT?” Title: Name: Amy Harris School: Budmouth Technlogy College Date: *Please delete as appropriate Attached are the splat boards used either as OHT’s or as projected slides using a data projector Engagement in GCSE Mathematics 31 32 70 40 50 85 65 27 12 96 80 45 35 Engagement in GCSE Mathematics 32 1.045 1.03 1.055 1.075 1.068 1.02 1.2 0.75 0.985 0.98 1.025 1.05 1.07 1.04 1.175 0.9 0.8 0.85 1.095 1.01 Engagement in GCSE Mathematics 33 Title: Module 3 Quiz Area of Mathematics: Number Entry level: Intermediate* Examination Board: AQA Modular* Outline of resource and how it was used including key questions: This Quiz was used to utilise group work to reinforce some of the techniques needed to answer module 3 questions. The class answered them in groups of 2, 3 or 4 and there were prizes for the best group in each round and overall. The groups passed on their answers after each round to the next group who marked it and passed it back. The excel document ensures that the results are easily collated and totalled up. The response from students was extremely positive and students were motivated and engaged throughout. I used this early on in the revision programme for module 3. Name: Marie Simmonds School: Purbeck Date: 12/05/06 *Please delete as appropriate Please indicate if you have an attachment : - Module 3 Quiz PowerPoint MS Module 3 Quiz results Excel MS File available on the CDROM. Engagement in GCSE Mathematics 34 NUMBER ADDITIONAL RESOURCES NO CASE STUDIES PowerPoint Resources Estimations to Check Arithmetic If 24 x 78 = 1872 then 240 x 0.78 = 187.2 WHY? What is the least number of steps needed to get from the first product to the second? If 24 x 78 = 1872 Then 18720 ÷ 7.8 = 2400 WHY? HOW? If 24 x 78 = 1872 then 18720 ÷ 7.8 = 2400 WHY? HOW? Can you tell which ones are wrong? AIM: TO USE ESTIMATIONS TO CHECK ARITHMETIC! Which of these answers must be wrong? Why? Discuss in pairs. 1) 2.3 x 4.2 = 7.65 2) 5.7 x 5.6 = 24.7 3) 16.7 + 11.2 = 31.9 4) 24.1 ÷ 3.8 = 10 5) 30.1 ÷ 14.2 = 2.1 6) 2.4 x 3.1 = 7.8 7) 345.4 – 140 = 189.6 Fractions What fraction, when you turn it into a decimal, starts like this: 0.0204081632 …? What fraction, when you turn in into a decimal, starts like this? 0.0103092781 …? Engagement in GCSE Mathematics 35 Truth Which of these statements are true? ‘One fifth is the average of one fourth and one sixth.’ ‘One third exceeds a quarter by one third of a quarter.’ ‘One third of one fifth is greater than one fifth of one third.’ Pills A pill for a certain illness must not be taken more than once in any period of an hour, or more than 6 in any period of 12 hours. What is the largest number of pills which could be safely taken in 18 hours? Basic Challenge Find a number where, if you take the last digit and put it at the front, the new number is 50% bigger than the number you started with. For example you could try 456, but this makes 645 which does not work because 50% bigger would make the new number 687. 17 Split 17 and multiply its parts to make the largest and smallest answers possible. e.g. 17 = 4 + 5 + 8 17 = 8.5 + 8.5 4 x 5 x 8 = 160 8.5 x 8.5 = 72.25 Sequences Find the next numbers in each of these sequences: 18 9 26 13 38 19 56 28 1 4 2 7 5 16 14 43 0 1 3 5 9 11 15 17 Engagement in GCSE Mathematics 14 41 21 … … … … … … 36 NON-CALCULATOR ARITHMETIC TO MAKE YOU THINK! Quick quiz for the start or end of a lesson. Questions can easily be varied for the topic of ability. Could ask for the first to get a row, column or diagonal. Find 5/6 of 12 Add together 3.6 and 17.98 Subtract 23.7 from 68.2 Evaluate 52 30x50 23x89 How much change from £20 when you spend £12.69 Find ¥49 Half of 10,480 I catch a train Double 341 at 10:30 and my journey lasts 2hrs 5mins. What time to I arrive at my destination? -54 - -67 Evaluate 0.67x10 Engagement in GCSE Mathematics 1.2x4 Round 19.8 to the nearest whole. 3/6 + 5/6 37 Using Powers and Knowledge Given that 13² = 169 133² = 17689 1333² = 1776889 and 16² = 256 166² = 27556 1666² = 2775556 Without using a calculator or a computer can you write down the answers to 13333² = 16666²= Extension Can you find another number between 10 and 20 which, if you keep repeating the second digit, and squaring, has the same number pattern? Engagement in GCSE Mathematics 38 ROUNDING TO ONE DECIMAL PLACE – 1 d.p. Match these up, one has been done for you! There is one question and answer which don’t match up, which ones are they? 1.234 0.9 56.09 123.5 23.67 123.4 0.888 1.2 123.45 340.5 8.88 23.6 4.167 9.1 340.85 0.1 123.35 56.1 0.08 8.9 9.11 4.2 23.64 23.1 23.06 23.7 Engagement in GCSE Mathematics 39 SECTION 2 – ALGEBRA Title: Snakes and Ladders Area of Mathematics: Number or algebra or…. Entry level: Foundation* Can be adapted Examination Board: Any Modular* Linear* Outline of resource and how it was used including key questions: Object of harder version is to make a set of cards for use in a Snakes and Ladders game (and then swap, or play the game, to at least check the cards work. Very often I shall then use them with a Junior class). The answers to questions should therefore be whole numbers, largely within the range 1 to 6. The activity differentiates itself by outcome. The group would normally suggest starting points: it is important to demonstrate how equations can be formed, for example. Students can work individually, in pairs or threes (more than that often leads to redundancy). Materials: Each individual or group needs card, ruler and scissors to design up to 40 cards on an A4 sheet (careful measuring needed!); a set of Snakes and Ladders boards, and counters, is needed for using the cards. A demonstration set of cards is attached. Easier version: students play pre-prepared game: cards can be colour-coded according to difficulty or content. Players must agree on solution before a move is made. Name: Jennie Golding School: Woodroffe Date: June 2006 *Please delete as appropriate Please indicate if you have an attachment : - Engagement in GCSE Mathematics Snakes and ladders cards Snakes and ladders board 40 Snakes and Ladders Cards 4+ ¨ = 6 1,2,3,_,5,6 2,4,6,¨,10 x+ 3 = 4 3× =6 1 × 2 = 10 18 ÷ 2 = ¨ 4,y,10,13. 4 + x = 7 ¨-3=5 30÷ = 3 3++2=9 11 - = 8 21 ÷ 3 =¨ 3 + y = 4 p+p+p=6 19,14,9,_,. p + 3 = 8 V-2=8 _,6,9,12,1 5 .×3= 15 0× 3 = 18 17 – x = 10 -3=6 4,_,12,16. 5,x,15,20.. 4 × t = 12 60÷=10 . 7–z=4 × 3 = 3 0÷ 3 = 3 ¨ - 1 = 3 40,30,20 10 ÷ 1 = 5 ¨,14,21,28 p×p=25 ,_ 1,3,5,7,y, 12++=24 X + x = 6 ¨+ ¨ = 8 11 Engagement in GCSE Mathematics 41 Using reasoning and collective memory to revise equations and their graphs Area of Mathematics: Algebra - graphs Entry level: Intermediate Higher Examination Board: Modular Linear Outline of resource and how it was used including key questions: Title: Lesson Objectives x Maths – to consolidate knowledge of algebraic graphs and associated equations, particularly the ability to use y=mx+c x Thinking skills – to develop skills in information processing, reasoning, enquiry and evaluation. Pupils work in groups of 4 – groups may be pre-selected to ensure a mix of abilities. 1. Each group is provided with a set of equations. 2. Each group selects one person to come to the front and look for a graph fro 10 seconds (change time if it is too long) 3. This person goes back to their group to discuss what they saw and to see if they can match the graph to one of their equations. 4. The group then send another person to look at the graph- hopefully with a clearer idea of what to look for (gradient, intercept). 5. Continue in this way until the group have refined what it is they need to look at and most have decided which equation matches the graph! After each matching activity, pupils will need to be told which the correct equation is and given a minute or two to discuss how their strategy might change as a result of the answer. There are nine sets of graphs and equations to use, starting simply and then building up to more complex equations and including some quadratics, cubics etc. This topic could be amended for work on transformations of graphs such as f(x) to –f(x)+a, f(x+a), f(ax), a(f(x). IF USING THE ATTACHED GRAPHS, MAKE SURE YOU CUT OUT THE EQUATION WRITTEN UNDERNEATH THE GRAPH!!! (I couldn’t work out how to do it so I simply cut that part off once I’d printed it!) Name: Sally Burt School: Lytchett Minster Date: June 06 *Please delete as appropriate Please indicate if you have an attachment : - PowerPoint Engagement in GCSE Mathematics Resource Sheet Other 42 Brief Lesson Plan Explain the task – On your desk you will have some equations and on a desk at the front there will be a diagram of a graph that matches one of your equations. Your task is to find the correct equation for the graph. One member from each group will be given 10 seconds to look at a graph, this person will return to his/her group and you will be given a minute or two to discuss any findings and plan the next visit which will be by a different member of the group (another 10 seconds). By working together you should be able to find the correct equation. Altogether there are nine graphs to be matched: we will do them one at a time. Towards the end of the lesson you will be asked to describe the strategies you used to solve each task. There is a sheet of paper on each desk for you to make notes on as you develop strategies. Plenary -Ask students to evaluate strategies used and their successes and failures to summarise what information was needed to match each graph to it’s correct equation. (Intercept on y axis, gradient, positive or negative gradient, shape of graph). Engagement in GCSE Mathematics 43 Task One Graph y = -x Equations y = -x, y = x, y = -x – 1 Task Two Graph y = -x 2 Equations y = -x, 2 y = x, 2 Task Three Graph y = 6 - x Equations y = 6 - x, y = 2x y = x + 6, Task Four Graph y = 3x + 4 Equations y = 3x + 4, y = 3x - 4, = 4 - 3x y=6 y = 4x + 3, y Task Five Graph y- 5x = 1 Equations y - 5x = 1, y = 1 - 5x, y + 1 = 5x Task Six Graphs y = x2 + 4 and y = 3x2 Equations y = x2 + 4, y = 3x2, y = ½ x2, Task Seven Graphs y = 1, x Engagement in GCSE Mathematics y = x2 and y=x3 - 3 44 y = 1, x y = x, 3 Engagement in GCSE Mathematics y = x3, y=x3 - 3 45 Engagement in GCSE Mathematics 46 Engagement in GCSE Mathematics 47 Engagement in GCSE Mathematics 48 Engagement in GCSE Mathematics 49 Engagement in GCSE Mathematics 50 Engagement in GCSE Mathematics 51 Engagement in GCSE Mathematics 52 Engagement in GCSE Mathematics 53 Engagement in GCSE Mathematics 54 Engagement in GCSE Mathematics 55 Title: Equations of Straight Lines Area of Mathematics: Algebra - graphs Entry level: Foundation Examination Board: Linear Outline of resource and how it was used including key questions: Pupils sort into 4 groups of their choice (should end up with some sorting by coefficients of x some by constants etc This can be followed by investigational work on finding the significance of these values if this topic is new. Can also be used for revision purposes, once pupils have sorted cards into groups, give them copies of the graphs. This should enable them to come to the correct conclusions. Name: Sally Burt School: Lytchett Minster Date: June 06 *Please delete as appropriate Please indicate if you have an attachment : - resource sheet of equations Engagement in GCSE Mathematics 56 y = 2x – 1 y = 3x-4 y = 3x -1 y=½x+2 y = 2x + 2 y=½x–1 y = 2x – 4 y = ½ x -4 y=x–1 y = 2x + 3 y=x+2 y = 3x + 3 y=x–4 y = 3x + 2 Engagement in GCSE Mathematics y=½x+3 y=x+3 57 A puzzle with Numbers Title: Area of Mathematics: Algebra Foundation Entry level: Linear Examination Board: Edexcel Outline of resource and how it was used including key questions: This was used as a starter. It engaged students who did not really enjoy algebra. Students practiced mental maths skills and found that the answer was always 3. They then tried to use algebra to prove this. Name: Clare Davenport Date: June 2006 School: Shaftesbury School and Sports College *Please delete as appropriate Please indicate if you have an attachment : - PowerPoint Resource Sheet Other A puzzle with numbers • • • • • • • • Think of a number Double it Add 7 Multiply it by 5 Subtract 5 Divide by 10 Subtract the first number What number do you have? A puzzle with algebra n 2n 2n + 7 5( 2n + 7) 10n + 35 – 5 10n + 30 10 • n+ 3 – n • • • • • • Engagement in GCSE Mathematics = 10n + 35 = 10n + 30 = n+3 =n 58 Title: Algebra Match Up Cards Area of Mathematics: Algebra Foundation Intermediate Entry level: Linear Examination Board: Edexcel Outline of resource and how it was used including key questions: This was used as a starter. Students work in pairs to match up these activities. Print the resource sheet onto coloured card, laminate and cut up. Name: Clare Davenport Date: June 2006 School: Shaftesbury School and Sports College *Please delete as appropriate Please indicate if you have an attachment : - PowerPoint Engagement in GCSE Mathematics Resource Sheet Other 59 Match Ł 4(3b² - 2a) Match Ł 3a(2 + 4b) Match Ł a(12a + 4b) Match Ł -7(q² - s) Match Ł 2(2a + 3b) Match Ł -12s² + 9t Match Ł 30m – 5mn Match Ł -32f – 48g Match Ł -7q² + 7s Match Ł 9m(-m+nb) Match Ł 3p(2p-4r) Match Ł -20c + 24d Match Ł -(6v – 7u) Match Ł -4(5c – 6d) Match Ł -6m² - 4m Match Ł 12b² - 8a Match Ł 5(6m –mn) Match Ł 8(-4f- 6g) Match Ł 12a² + 4ab Match Ł 4x(x + 2y) Match Ł -9m² + 9bmn Match Ł -10t – 5u Match Ł 4s(2s – 4c) Match Ł 12x² - 18x Match Ł -2(3m² + 2m) Match Ł 4a + 6b Match Ł 5(6a + 3b) Match Ł 6a + 12ab Match Ł 30a + 15b Match Ł 8s² -16cs Match Ł 4x² + 8xy Match Ł 6p² - 12pr Match Ł -6v + 7u Match Ł -3(4s² - 3t) Match Ł 6x(2x – 3) Match Ł -5(2t + u) Engagement in GCSE Mathematics 60 Title: Excel Match up Game Area of Mathematics: Algebra Lower Intermediate Higher Entry level: Linear Examination Board: Edexcel Outline of resource and how it was used including key questions: This is used as a game at the end of a lesson. The questions can obviously be changed according to ability. We have a house system with colours so when a student correctly chooses a pair, it can be filled that colour. Name: Clare Davenport Date: June 2006 School: Shaftesbury School and Sports College Engagement in GCSE Mathematics 61 Title: Quadratic Maze Area of Mathematics: Algebra Intermediate Higher Entry level: Linear Examination Board: Edexcel Outline of resource and how it was used including key questions: Thi sheets is an excellent activity to reinforce understanding. Use as a starter or during a lesson. Students work from IN to OUT by shading boxes which have multiples of (x-2) Name: Clare Davenport Date: June 2006 School: Shaftesbury School and Sports College Please indicate if you have an attachment : - PowerPoint Engagement in GCSE Mathematics Resource Sheet Other 62 Find your way through this quadratic maze. Shading multiples of (x - 2) You can only move vertically or horizontally. Factorising the quadratics will help! IN x² - x – 2 x² + x - 6 x² + 2x - 3 x² + x - 2 x² - 9 2x² - 5x – 3 x² - 4x + 4 x² - 4 2x² - x - 6 x² - x - 6 x² - x – 2 5x² - 21x + 4 x² + 3x + 2 3x² - 5x - 2 3x² - x - 2 2x² + 3x + 1 x² + 5x - 14 x² - 5x + 6 x² - 3x + 2 3x² - 7x - 6 x² - 2x – 15 5x² - 12x + 4 x² + 6x + 9 x² + 7x + 12 2x² - 7x - 4 x² + 4x + 4 x² - 8x + 12 x² + 5x + 6 x² - x - 12 x² - 6x + 8 x² - x – 2 x² - 7x + 10 2x² + 9x + 4 3x² - 10x - 8 x² - x - 2 x² - 10x + 16 2x² - 7x + 6 x² - 2x - 8 5x² + 13x + 6 3x² - 2x - 8 x² x – 2 x² + 8x + 15 3x² - 4x - 4 x² - x - 2 x² + 4x - 12 x² + 3x – 10 2x² - 3x - 2 2x² + 3x - 14 x² - 3x - 10 5x² - 16x + 12 OUT Engagement in GCSE Mathematics 63 Title: Equation Sort Area of Mathematics: Algebra Foundation Intermediate Entry level: Linear Examination Board: Edexcel Outline of resource and how it was used including key questions: Print these equations onto card. PGet students to sort the equations in any grouping, ask them to justify their grouping. You could ask students to group these groups in groups. You could then get students to work out a point which lines on each line. Students could plot these graphs onto a grid. Name: Clare Davenport Date: June 2006 School: Shaftesbury School and Sports College y = 3x y=x+2 y=x+1 y=x y=4 y = 10 y = 2x + 2 y = 4x y = -2 y=7 y = 2x - 4 y = 2x y=2–x y=x+4 y=7-x y = 2x - 4 y=½x+4 y=x–4 y = 2x + 4 y = 10 - x y = 4x + 2 y=½x+2 y=0 y = 3x + 2 Engagement in GCSE Mathematics 64 Title Swatting Flies!! Area of Mathematics: Algebra Foundation Intermediate Entry level: Linear Examination Board: Edexcel Outline of resource and how it was used including key questions: This is a very light hearted way of revising any type of algebraic graph. It would help if you had Autograph, but you could do this on the board or on paper. Sketch a set of axes and mark several flies. Give the students an appropriate number of lives in which to swat them. This means so that a graph crosses through them! On the picture below you can see how the line y = 2 has squished a fly. You could set conditions about the type of graph they can use. Name: Clare Davenport Date: June 2006 School: Shaftesbury School and Sports College Engagement in GCSE Mathematics 65 ADDITIONAL ALGEBRA RESOURCES WITHOUT A CASE STUDY PowerPoint Resources P and Q If p and q are two numbers between 0 and 1, then p+q - pq will also be a number between 0 and 1. Why? Guess my number I think of a positive number, add one, multiply my answer by itself, take away twice the number I first thought of, and my answer is 26. What number did I think of? Which two are they? Two of these expressions always have the same value, whatever number you choose n to be. Which two are they? n²- 1 7n + 5 Engagement in GCSE Mathematics (n+1)(n–2) 2n² + n n² - n - 2 66 Brackets Grid Starter Use as a quick starter to revise multiplying expressions with Intermediate Year 10. X 2a – b + c -3 a2 a+b 2c -4b -4b b–c a 2 – b2 Engagement in GCSE Mathematics 67 Dominoes Like Terms 7a+2a+a 2r+2w 5t -6s –s +4t -s 2n b+6b-2b 10a t-t + t + t + s 9t – 7s + s-s 2x+4y+y+8 x 5b 7h+h+5h+h -h 2t+s 7g-3g-7+3 10x+5 2w+8-10-w y 13h 10t+6s+5t2s-t w-2 6k-10k 16j-3j-5j Engagement in GCSE Mathematics 4g-4 7k+m+n+km+n 14t+4s 5r+4t+6d+r3d -4k 7y+8-4y-9 8k+2n 6r+4t+3 d 68 n+n+n-nn+n 8j r+r+s+w+ws-s 3y -1 S.Burt Engagement in GCSE Mathematics 69 Dominoes multiplying terms 5j x 4l 6a x 7c k3 h4m5 axaxa 42ac 2w x 2w x 2w 20jl 2b x 3c a3 c2 x c3 8w3 2f x f 6bc 2d2 x 3d2 c5 8h x 5h 2f2 (7p)2 6d4 2m x 3n x 4p 40h2 rxrxtxt 49p2 2d x 3d x 2e x 2e r2t2 y x y x y x 24mn y p Engagement in GCSE Mathematics 70 k2 x k y4 h2 x h2 x m3 x m2 24d2 e2 S.Burt Engagement in GCSE Mathematics 71 SECTION 3 – SHAPE AND SPACE Title: Angle – True or False Area of Mathematics: Angle rules Entry level: Foundation* Intermediate* Higher* Examination Board: Any Modular* Linear* Outline of resource and how it was used including key questions: An activity with diagrams and statements. Students, in pairs, need to decide/work which are true and which are false. I used this with Intermediate Year 10 to revise angle work completed during Key Stage 3. There might be too many cards but it would be easy to reduce the number or simply take out the one involving parallel lines for the less able students. I set a homework based on GCSE questions to complete the revision before we moved on to circle theorems. Angle\Angle true or false.xls PS I think there are a couple of spelling errors on the work sheets. Name: Sally Burt School: Lytchett Minster School Date: 8/6/06 *Please delete as appropriate Resource Sheet ‘Shape and angle true or false’ Excel resource – paper copy in school master copy only. Please indicate if you have an attachment: - Engagement in GCSE Mathematics 72 Title: Transformation Sorting Area of Mathematics: TRANSFORMATIONS Entry level: Foundation* Intermediate* Higher* Examination Board: Any Modular* Linear* Outline of resource and how it was used including key questions: Used as a starter to revise transformations with an Intermediate Year 10 group but could be used with any ability if only some of the cards are used. Class worked in groups and were asked to group the cards according to the four transformations. They should have found that some of the cards didn’t fit into a single group, some as they involve skews, some as they are combined transformation. This can be followed by a discussion on how to tell what transformation has taken place and recap on how to define transformations fully (E.g. Rotation is defined by giving a direction, the number of degrees and the centre of rotation). This can then be followed by formal work on combined transformations for Higher Students Transformations and vectors\transformation sorting.doc Name: Sally Burt School: Lytchett Minster School Date: 8/6/06 *Please delete as appropriate Please indicate if you have an attachment : - Engagement in GCSE Mathematics Resource Sheet 73 1 Shape Image Image 2 Shape 3 Shape Image Image 4 Shape 5 Shape Image 6 Shape 7 Shape Image Image 8 Shape Image 9 Shape Image 10 Shape Image 11 Shape Image 12 Shape Image 13 Shape Image Engagement in GCSE Mathematics 14 Shape 74 15 Shape Image Image 16 Shape 17 Shape Image 18 Shape Image 19 Shape Image 20 Shape Image Image 22 Shape 21 Shape 23 Shape Image Image Image 24 Shape S.Burt The images on the work sheet resource are all within the boxes difficulty has been experienced importing it into Word. Engagement in GCSE Mathematics 75 Title: Pythagoras’ theorem – a right angled triangle or not? Area of Mathematics: Shape, space and measure Entry level: Intermediate* Examination Board: EdExcel Linear* Outline of resource and how it was used including key questions: Right angled triangle or not? Having taught Pythagoras’s theorem the previous lesson I used the attached OHT to aid discussion of whether the 11 triangles detailed were right angled triangles or not. A lively discussion followed with much use of calculators with some students jotting working out down. The Pythagorean triples were soon spotted and the similarity between these triangles identified. You could use this as either a starter or a plenary or even as a homework. Name: Amy Harris School: Budmouth Technology College Date: *Please delete as appropriate Please indicate if you have an attachment : - Resource Sheet Engagement in GCSE Mathematics 76 A right angled triangle or not? Check these out h2 a 2 b2 A b h 3 4 5 9 12 15 4 5 7 6 8 10 1 2 3 5 7 8 5 8 9.4(1dp) 4 6 7.8(1dp) 4 8 8.9(1dp) 1 1 1.4(1dp) 30 40 50 Engagement in GCSE Mathematics decision 77 ADDITIONAL SHAPE AND SPACE RESOURCES WITHOUT A CASE STUDY Power Point Point T The distances of a point T from the corners of an equilateral triangle are 3, 5 and 7 cms. What is the size of the equilateral triangle? Engagement in GCSE Mathematics 78 SECTION 4 – HANDLING DATA - STATISTICS Title: The Averages song Area of Mathematics: Handling data – calculating averages Entry level: Foundation* Intermediate* Examination Board: OCR Modular* Outline of resource and how it was used including key questions: A simple song to help remember which average is which. This should be sung to the Eastenders theme tune. Commonest is called the mode Can be 2 or 3 depends on the data Median is in the middle If you line ‘em up from smallest to the biggest Add ‘em up, share ‘em out Then you have found the mean of the data Name: Lucy Neil School: Gillingham Date: July 06 *Please delete as appropriate Theme music for Eastenders is on the CDROM. Engagement in GCSE Mathematics 79 Title: Tongue twisters Handling Data (scatter graphs, and correlation) Entry level: Foundation* Intermediate* Higher* Examination Board: OCR Modular* Outline of resource and how it was used including key questions: In pairs students should time how long it takes each other to say the tongue twister below. Area of Mathematics: ‘This is a can opener, a can opener can open any can can a opener can. If a can opener cannot open a can it cannot be a can opener can it?’ They should make several attempts and then take an average. Ask the students who was the quickest? Why they think they were the best? You could also ask the slowest what they think. Ask the rest of the class what they think they might be able to affect how quick they are at tongue twisters. Ability (later do a short IQ test) Size of mouth (measure width of mouth when grinning widely) Height of mouth when open Volume of liquid in a mouthful (measure water in a measuring jug from the science department) Quick wittedness (time how long it takes to answer 20 quick mental arithmetic questions) Other ideas? Record the results for each member in the class. Then draw scatter graphs to check if there is any correlation. Name: Graham Holdaway School: Gillingham Date: July 06 *Please delete as appropriate Engagement in GCSE Mathematics 80 Title: Correlation Area of Mathematics: Handling Data Entry level: Foundation* Intermediate* Higher* Examination Board: Any Modular* Linear* Outline of resource and how it was used including key questions: Use as an introduction/recap to correlation with any ability. Give pupils sets of cards and ask them to match (in pairs) those that they believe have a relationship. Then put the ‘matched pairs’ into two groups – strong relationship, weak relationship. There are lots of ways the cards could be matched so this could generate some discussion. Students could also be asked to find the pair which is least likely to have a relationship. Name: Sally Burt School: Lytchett Minster Date: June 06 *Please delete as appropriate Please indicate if you have an attachment : - Resource sheet –Is there a relationship? Engagement in GCSE Mathematics 81 The size of feet The price of a car Handspan The age of a car Height of a person The length of a car Mock results for Maths Paper 2 Marks out of 10 in a Times Tables Test Marks award by Judge B in a dancing competition Price of House Ability to spell Ability to read Ability to sing Ability to play the piano Size of mouth How loud you can shout Number of bedrooms in a house Number of hours worked Length of leg Colour of front door of a house Wages Weight of a person How fast you can run Number of times you yawn in a day Maths set Age of a person Length of arm Size of bed Length of hair Engagement in GCSE Mathematics Intelligence Hair colour Mock results for Maths Paper 1 Marks out of 10 in a Mental Maths Marks award by Judge A in a dancing competition Age of House Number of hours of sleep 82 SECTION 5 – HANDLING DATA - PROBABILITY Title: The Monty Hall Problem Area of Mathematics: Handling data - probability Entry level: Intermediate* Higher* Examination Board: OCR Modular* Outline of resource and how it was used including key questions: Read the article from ‘The Curious Incident of the Dog’ (as much or as little from P 78-79) Before reading out an explanation, act out the game using some prizes (chocolate or forfeit) and ask students what they should do and what the chances are of winning a car/chocolate. They will usually say P(win car/chocolate) = ½ . Then explain that you should change because the P(win car/chocolate) = 2/3 Ask students to work out why it is better to swap (here you might want to go through the comments made on page 79-80. Draw a probability tree to show how it works. See page 81 for an example. Fill in the probability on each branch. As the plenary you can carry out several trials of the problem with different members of the group and check that the probability of winning when you change does tend towards 2/3. Alternatively you might just want to use this lesson as a game and rather than referring to the book just set up the lesson as a game show, record the results, do enough times so that if you swap P(win) is 2/3. Then discuss with students are they just a lucky class and draw a probability tree to show that the p(win if swap) is 2/3 rather than ½. Name: Rachel Day School: Gillingham Date: *Please delete as appropriate The pages form the book are included as jig file on the CD-ROM Engagement in GCSE Mathematics 83 Title: The Tree of Life Area of Mathematics: Probability Entry level: Intermediate* Higher* Examination Board: OCR Modular* Outline of resource and how it was used including key questions: Draw a probability tree to show what you would do on the weekend. This can be as detailed as you want, I used P(go away for the weekend) =0.4 P(don’t go away) = 0.6 Friday evening P(go to pub) = 0.7 P(don’t go to pub) = 0.3 Saturday P(go shopping) = 0.65 P(don’t go shopping) = 0.35 Saturday evening P(stay in) = 0.85 P(don’t stay in) = 0.15 Sunday P(work) = 0.6 P(no work) = 0.4 As a whole class activity, draw a probability tree. Then ask questions: 1. What is the probability of going out both nights? 2. What is the probability of going out at least one night? 3. What is the probability of going shopping on Saturday and out in the evening? Alternatives to this tree depending on the level of the group would be to include conditional probabilities, and ask more detailed questions. E.g. What is the probability of going away and working on a Sunday? Then ask the students to draw their own life tree – to make it simpler to start with, it should only be one evening and use complementary events (i.e. P(watch TV), P(don’t watch TV)) rather than a variety of options. They should the write a list of questions for their partner to calculate the probability of certain outcomes. Name: Lucy Neil School: Gillingham Date: July 06 *Please delete as appropriate Engagement in GCSE Mathematics 84 Title: Biased or Not? Area of Mathematics: Data collection Entry level: Foundation* Intermediate* Higher* Examination Board: Any Modular* Linear* Outline of resource and how it was used including key questions: Haven’t used this yet as have written it for the new 2 Tier Scheme for Sept. I hope to use it as an introduction to collecting unbiased data so it will be used before any formal work takes place – hopefully students will be able to decide when data is unbiased as a result of the task! Name: Sally Burt School: Lytchett Minster School Date: 8/6/06 *Please delete as appropriate Please indicate if you have an attachment : - Engagement in GCSE Mathematics biased or not worksheet 85 Decide which of the following ways of collecting data is fair. If you think the sample would be biased, write down what is wrong and how you could improve it. 1. Mr Fit wants to find out how 7. An engineer, Miss Roads, is many people in his area regularly trying to find out how busy a played sport. He decided to stand certain stretch of road is. Each outside the local Sports Centre to day, he counts the number of cars ask people. passing a certain point between 2 p.m. and 3 p.m. so that he can write a report. 2. An engineer, Mr Pelican is trying 8. Mr Softy, the Headteacher, to find out how busy a pedestrian wants to find out if pupils are happy crossing is used. Each day, he with the design of their school tie. counts the number of people using He asks ten males in Year 10. it for twenty minutes 8.30 a.m., 1.30 p.m. and 4.30 p.m. so that he can write a report. 3. A local radio station is carrying 9. As part of a school project, out a survey to find out how popular David wants to find out how older people feel about modern music. He the new cinema is. They send Mr decides to ask his parents, uncles, Sound to stand outside the local supermarket and ask fifty adult aunts and grandparents. males, fifty adult females and fifty teenagers. 4. Mrs Story, the school librarian, 10. A car manufacturer wants to wants to find out about the reading find out if there have been any habits of children in her school. problems with the new car they One lunchtime, as the children have just launched. They send out a come into the library, she asks questionnaire to every third person them how many books they have who has purchased the car. read in the last two weeks. She uses this information to work out the average number of books read by the children in the school. Engagement in GCSE Mathematics 86 5. Ms Beauty works for a famous skin care firm who have just launched a new product called ‘Get rid of Wrinkles’. She is asked to carry out a survey to see how people feel about the product. She asks ten women who she thinks are about 25 years old. 6. Mr Green is doing a survey to find out how much time people spend gardening. He visits a local gardening centre and asks people as they are leaving. Engagement in GCSE Mathematics 11. To find out how popular the school dinners are, Mrs Mean asks 15 boys and 15 girls from each year group. 12. Miss Wood works for a DIY magazine. She wants to find out how many people do their own decorating. She goes to the high street on Wednesday morning and again on Saturday morning and asks as many people to answer her questions as she can in an two hours. 87 ADDITIONAL HANDLING DATA RESOURCES PROBABILITY WITHOUT CASE STUDIES Random Sample PowerPoint Imagine! • Two students from this group are to be given a packet of sweets. • Another two are going to have to help me with some work during their break time. • I need to select these students at random. • Write down as many ways as you can think of that would really make my selection random LEARNING OBJECTIVE: To know what a random sample is • To know how to select a random sample. To know how to select a ‘Systematic Sample.’ Engagement in GCSE Mathematics 88 Stratified Sample PowerPoint LEARNING OBJECTIVE: To know how to collect an unbiased sample A committee of 10 people is required to represent a small village with a population of 800 women and 200 men, What would be a ‘fair’ sample? How many men, how many women? • What if 20 people were needed for the committee? • What if you wanted a committee of 25 from a village where there are 1600 men and 1000 women? • What if you wanted to select 20 people to stand on the School Council where there are 80 in Yr9, • 105 in Yr 10 and 115 in Yr 11. Engagement in GCSE Mathematics 89 PowerPoint What could this table be about? What could the table be about? What facts could you write down from the information given? (You should be able to find nine!) Blue Brown Boys 12 10 Girls 14 15 • Now write some probabilities that you could find from the table and then find them! Engagement in GCSE Mathematics 90 Give students following sets of data with some possible statistical measures. Students have a set time to find out as many incorrect values as possible - the idea being that they begin by using common sense such as the mean in Set A can’t be 9 as it is only just within the data (not because there isn’t a 9) SET A MEAN = 6 4, 1, 7, 10, 8, 8, 5, 6, 7, 4 MODE = 8 MEAN = 9 Engagement in GCSE Mathematics 91 SET B MEAN = 3 ¼ 1.2, 4.5, 7.8, 2.3, 2.4, 1.3 RANGE = 6.6 There is no MODE. MEDIAN = 2.35 Engagement in GCSE Mathematics 92 SET C RANGE = 34 34.6, 28.2, 31.7, 34.8, 29.2, 30, 29.6, 34.6 MEDIAN = 30.85 MODE = 34.7 There is no MODE Engagement in GCSE Mathematics 93 SET D MEAN = 310 310, 330, 329, 319, 325, 348, 317, 325, 337, 340, 329, 311 RANGE = 325 RANGE = 38 MEDIAN = 329 Engagement in GCSE Mathematics 94 SET E MEAN = 13.67 SHOE SIZE 5 6 7 FREQUENCY 14 15 12 MEAN = 5.95 MEDIAN = 6 RANGE = 2 Engagement in GCSE Mathematics 95 SET F RANGE = 0.9 2.3, 2.5, 2.9, 2.1 2.0, 2.6, 2.7, 2.3, 2.3, 2.5, 2.4, 2.3, 2.8, 2.7 MEAN = 2.85 MODE = 2 Engagement in GCSE Mathematics 96 SET G MEAN = 52.8 NUMBER OF MATCHES 51 52 55 NUMBER OF BOXES 2 7 4 MEAN = 4.3 RANGE = 4.3 RANGE = 4 Engagement in GCSE Mathematics 97 SET H MODE = 38 32, 38, 36, 36, 32, 34, 35, 38 RANGE = 6 MEAN = 32 MEAN = 38 Engagement in GCSE Mathematics 98 SET I MEDIAN = 19.5 HANDSPAN FREQUENCY (nearest cm) 16cm – 17 16 cm 18 cm – 19 21 cm 20cm – 21 29 cm RANGE = 13 MODE = 21 MEAN = 22 Engagement in GCSE Mathematics 99 RANGE = 5 Engagement in GCSE Mathematics 100 Mutually Exclusive Events These cards refer to finding probabilities. They can be sorted into two groups. Can you sort them? How did you sort them? Has blue eyes or fair hair. Good at singing or Pick an Ace or a good at dancing. Heart from a pack of cards. Roll a prime Rode a bike or Pick an even number on or caught the bus to number or a even number on school last multiple of 3. dice. Tuesday. Girls with long Has blue eyes or Roll a 2 or a hair or girls with brown eyes. number greater blonde hair. then 4 on a dice. Choose a toffee Win a football Wears glasses or a mint from a match or draw a or wears a bag of sweets. football match. brace. Engagement in GCSE Mathematics I’ll have chips or chops for tea. Wore trainers to school or wore shoes to school Pick an Ace or a Jack from a pack of cards. Wore glasses or contact lenses to school yesterday.101 Bibliography Improving learning in mathematics – mainly software resources Standards Unit materials Questions and Prompts for Mathematical Thinking ATM book Watson and Mason 1998 Thinkers ATM book Bills, Bills, Watson and Mason 2004 Engagement in GCSE Mathematics 102
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