Making Maths Meaningful! With Myra Dunley-Owen and February 2015 Edition Dear School Leaders, Educators, and Learners Welcome to the second newsletter of 2015! As mentioned last month, we’re focusing on fresh approaches to the teaching and learning of Mathematics in 2015. I encourage you to keep trying different approaches to Maths! We can all benefit from trying out new approaches. I’ve been particularly impressed with our new cohort of thirty Grade 1 teachers (part of JUMP – the Junior Uplands Maths Programme – also sponsored by The Momentum Fund) who are now using a skipping rope in their classrooms to practice counting forwards and backwards. A wonderful numeracy exercise that has the added benefit of expending the boundless energy of Grade 1 learners! I hope you enjoy reading about the following topics in this newsletter: Assessment practices – to highlight the ‘taught and caught’ part of Mathematics Number sense – to ensure the foundations are properly laid for Mathematics Monthly competitions – to engage your mind Pi Day on 14 March – to celebrate with your learners Maths Teacher Feature – to highlight the amazing Mr BN Mashigo at Khutsalani Secondary Please let me know if you have any comments, ideas or suggestions about Mathematics in your schools. I would love to hear from you! Mathematically yours, Myra Myra Dunley-Owen Maths Specialist Uplands Outreach [email protected] The beauty of Maths MATHEMATICS Did If people do not believe that Mathematics is simple, it is only because they do not realise how complicated life is. - John von Neumann You Know? Fibonacci was educated in North Africa while his father was a diplomat in Algeria. Want to know more? Google Fibonacci and the sunflower! 1 A Fresh Approach to Assessment – as a Tool of Diagnosis! The first term of 2015 is rapidly drawing to a close, and we should by now have been assessing our learners to ensure that effective learning has taken place. Assessment provides useful information and must be used optimally to inform effective teaching and promote purposeful learning. We must also remember that an effective teacher does not only have good mathematics content knowledge, but also has knowledge of how to teach mathematics, and how learners learn mathematics. These three qualities develop mathematical proficiency in teachers. Also, time needs to be provided for teachers to continue their professional development, sharing with one another about common problems and working together to develop their teaching proficiency. Diagnostic reports of the Annual National Assessment (ANA) results and the NSC (matric) have been printed and teachers are attending workshops on the common errors identified and discussing how to improve results in 2015. The new project “1 + 4” for all Grade 8 and 9 teachers is underway with all the re-planning and new time tables to accommodate these teachers being out of the classroom every Monday. However, I wonder if this is targeting the right teachers? If we analyse the maths results of each grade we can see clearly that the results decrease as we move through the grades: Using Maths to assess Maths performance! From Grade 1 to Grade 4 there is a decrease of 31%, and if we move from Grade 6 to Grade 9 we should also expect a decrease of this order if the pattern continues. This would take us to 12%, which is very close to the 11% that was actually achieved in the 2014 ANA! Furthermore we all know that learning maths is accumulative so that if learners only know about 40% of the basics in Grade 6, it is expected that the results in the Senior Phase will be considerably less. Why must we then target only the Grade 8 and 9 teachers – the problem begins much earlier than this! Yes, these weekly workshops will improve the ANA results at the end of 2015 – but only because the teachers have ‘trained’ the learners in the different topics – but I doubt if there will be conceptual understanding. This will not help the learners who take mathematics in the FET phase, nor will it improve the matric results. And the poor teachers in the FET phase will still have to try and teach abstract concepts with learners not knowing the basic concepts needed. However, I know our maths teachers, and they will continue to do their best by giving extra classes daily, over weekends and also during their holidays. Should we not treat the “cause” of the poor results and not simply “band-aid” the symptoms along the way? Matric matters – but primary school matters more. This is the key reason why Uplands Outreach is now working with Grade 1 teachers, thanks to support from The Momentum Fund. 2 The basic concept focus for Foundation Phase Mathematics Long-term studies indicate the following: beginning first graders (those just starting out in school) that 1. understand numbers, 2. understand the quantities those numbers represent, and 3. understand simple arithmetic will have more success in learning mathematics through to the end of primary school, while other studies suggest the effect actually lasts throughout the rest of their lives. Maths is critical for success in many fields, and South Africa is simply not doing a great job of teaching maths. Studies find that once students fall behind, it's very difficult to correct misconceptions and to bring them up to speed. Results also showed that understanding numbers and quantity is a necessary foundation for success as the student progresses to more complex math topics. This reinforces the idea that maths knowledge is incremental, and without a good foundation, a student won't do well because the maths gets more complex as one proceeds through school. So what do we mean by ‘number sense?’ Howden (1989) describes number sense as a “good intuition about numbers and their relationships. It develops gradually as a result of exploring numbers, visualising them in a variety of contexts, and relating them in ways that are not limited by traditional algorithms.” As learners work with numbers, they gradually develop flexibility in thinking about numbers, which is a feature of number sense. : It is essential that, from the beginning, teachers differentiate between numbers, numerals, digits and cardinal and ordinal numbers. is developed - it cannot be taught is helped by good, suitable activities that must be provided by the educator Levels of the same age will be at different levels of understanding Learners cannot and should not be forced to operate at a level of understanding they have not yet reached. Forcing a learner is bad for their development. Learners must be allowed to function at levels they feel comfortable with, and should use the understanding and tools they have. NUMBER CONCEPT Number concept simply means the understanding of number. All of the next abilities develop over time. This includes: the ability to count the ability to understand number symbols and what each symbol really represents a feeling for the size of numbers the ability to use numbers sensibly to solve problems the ability to estimate an answer to a calculation, and to judge whether a calculated answer makes sense knowledge of the vocabulary such as more, less, first, second, ….. last, halve, double 3 How do we develop this “number concept?” By learning to count! The young child learns to count by counting objects that are very similar. In the beginning, they see the differences between objects and do not want to, even cannot, count together different objects or objects with different colours or shapes. Counting does not mean reciting number names. Learners must learn to count a collection of objects correctly, and realise that the last name in the counting sequence gives the number of objects. This process takes time. Young learners go through different phases before they reach this understanding. This is perfectly natural and cannot be forced. What is needed for this development to take place is plenty of counting practice with real objects. During this time learners learn to recognise and write number symbols. The levels of number concept start with the child who can already count out correctly, and can write the number symbol for a number. Level 1: Counting ALL with models 4 + 2 e.g. 1 2 3 4 5 6 the child has to create each number before using it the process has to occur repeatedly the child has to construct the numbers repeatedly by counting from the beginning before acquiring a feeling of “how much” a number is Level 2: Counting on an abstract feeling for “muchness” of number is called numerosity of number - this is an abstract concept – the child will now be at level 2 For example: Counting all without models 4 + 2 Counting from the beginning until answer is reached 1, 2, 3, 4, ..., 5, 6 Counting on from first 4 + 2 Counting forward from the first number in the problem 4, .. / / 5, 6 4 Level 3: Decomposing – using number facts A child can decompose or change numbers in a given task in order to perform one or more different but equivalent tasks which give same answer e.g. add 25 to 38 - some think of 25 as 23 + 2, then add 2 to 38 giving 40. Others think of 25 as 20 + 5, and 38 as 30 + 8. Then they add like this: 20 + 30 50 + 8 58 + 5 63 When dividing 51 suckers among 3 children it is futile decomposing into 50 + 1 - parts like 30 + 12 + 9 are more useful Different children find different things easy - DO NOT INSTRUCT CHILDREN OR SUGGEST HOW TO DECOMPOSE NUMBERS - the aim is they make the calculation easier and more convenient for doing the calculation General remarks on the levels…. A child may count on to solve 7 + 8 , but count all to solve 25 + 17 - means child has not acquired numerosity of large numbers - reverts to level 1 to make sense of big numbers A child may use level 3 method to solve 25 + 2 8 (20 + 30 50 + 13 63) but may resort to drawing a picture and making marks to solve 19 3 (a level 1 method) - this indicates child is unfamiliar with the division operation Level 3 does not imply decomposing into number of tens and number of units e.g. 54 is not thought of as “five tens and four units” – this used to be taught –but it is a limiting and rigid conceptualisation seldom used in mental operations and it makes division very difficult - the natural way is to decompose into fifty and four Remember: Levels of number concept cannot be forced. the teacher has an important role to aid each child’s development of number concept by giving activities that allow them opportunities to move to higher number ranges and higher levels - but should not demand methods and skills that the child is not ready for. Sources/References: Notes on Early Arithmetic - Hanlie Murray (ex University of Stellenbosch) Developing Number Sense - Sue Southwood, Rose Spannenberg & John Stoker Elementary and Middle School Mathematics: Teaching Developmentally - John A. Van de Wall Department of Basic Education – Policy documents 5 Have any of you Yes ma’am, isn’t heard of the it that one that Cartesian plane? crashed last month? cras A true story recounted by a teacher from a Gauteng school MONTHLY COMPETITION TIME! Prizes There are of a R100 CNA voucher for the person that emails the correct answers to each category to Beauty Mashego at [email protected] first. Terms and conditions apply. Please include your name, school and cell number in your email. MONTHLY COMPETITION for Foundation Phase Find the number I stand for. I am a 2-digit number I can be counted in 4’s I am less than 80 My ten’s digit is 3 more than my unit’s digit MONTHLY COMPETITION for GET Phase Put each of the digits 0, 1, 2, 3, ……… , 9 in the circles alongside so that the sums of the numbers at the corners of each shaded triangle are the same. 6 MONTHLY COMPETITION for FET Phase 3 1 The isosceles right-angled triangle shown has a vertex at the centre 12 4 of the square. What is the area of the common quadrilateral? 4 ANSWERS TO NEWSLETTER 6 COMPETITIONS FOUNDATION PHASE 1. 11 squares 2. 20 triangles GET PHASE 1. 6 2. 6 3. 4 and 5 (or any 2 numbers less than 6) FET PHASE Answer: R6 million PI DAY IS MARCH 14 – can you see why? Quick Facts Pi Day is annually observed on March 14 (3.14) in honour of the mathematical constant pi (π). Pi Day is the unofficial holiday that celebrates the mathematical constant pi (π) on March 14 in the month/day date format because the digits in this date correspond with the first three digits of π (3.14). It has become an international observance that is celebrated live and online and also celebrates Albert Einstein’s birthday. Symbol for Pi What is Pi (π)? Pi (π) is the mathematical constant that has been known for almost 4000 years. Its value is the ratio of any circle’s circumference to its diameter in Euclidean space or the ratio of a circle’s area to the square of its radius. The value of pi is approximately equal to 3.14159265 ….. , but it is an irrational number and its decimal representation never ends or repeats. 7 Some Pi snippets is a Greek letter spelt out as pi, and is the symbol used to represent a particular number. It is an irrational number and the first 50 decimal places of its value are 3,141 592 653 793 238 462 643 383 279 502 884 197 169 399 375 10 ...... relates the radius or diameter of a circle to its area and to its circumference. has a very long history, but it was not given the symbol and name that we use today until 1706 by the Welsh mathematician William Jones. However, not much notice was taken of the idea until it was published by the more famous Swiss mathematician Leonhard Euler in 1737. The ancient Egyptians (c. 2000 BC) knew of the diameter/area relationship of a circle. They recorded that the area of a circle was found by taking eight-ninths of the diameter and squaring it. This gives a value of about 3,16 for . The Babylonians, at about the same period, has a stated value of 3,125 which they used for their work on the circle. All of the these estimates were produced by careful measuring and observation. No matter how big or how small a circle is, if you divide its circumference by its diameter, you always get the same number. It is known as pi – or by the symbol - a name given to it by the ancient Greeks. It is an irrational number usually rounded off to 3,14. In 2011 a supercomputer in Tokyo calculated to a billion decimal places. What do people do on Pi Day? There are many activities that celebrate Pi Day such as games, creating some type of pi ambiance, eating “pi” foods, converting things into pi, making strange mathematical activities like having a contest to see who knows the most digits of pi. Many people celebrate Pi Day by eating pie and discussing the relevance of π. Many teachers will use this date to engage students in activities related to pi by singing songs about pi and developing pi projects. Mathematicians, teachers, maths students of all ages and other enthusiasts celebrate the number with pi recitations, pie-baking, pie-eating contests and math-related activities. The First Pi Day The Pi Day celebration was founded by Larry Shaw and it was first held in San Francisco in 1988. The celebrations began with the public and museum staff marching around a circular space, and then eating fruit pies. The museum has since then added pizza to its menu and the programme has grown to include activities such as creating Pi puns, Pi-related activities, and many other activities that involve Pi. What use is Pi? Pi is incredibly useful to scientists, engineers and designers. Anything circular and anything that moves in circles involves pi. Without pi, people wouldn’t be able to build cars, understand how the planets move, or work out how many baked beans fit into a can! Sources: www.exploratorium.edu/pi; Theoni Pappas, The Music of Reason 8 Maths Teacher Feature: Mr B.N. Mashigo My Career Path: Teaching was not my dream when I was a child. I wanted to become a doctor, but because of financial constraints and the scarcity of bursaries in those years, I could not take that path after completing my matric. After matric I was teaching Maths, and the following year I went to college to do my teaching diploma. Since then I never thought I will quit teaching - because the love of teaching developed and grew. That’s how I became and stayed a teacher. After completing my training I joined Khutsalani Secondary School. I’ve taught at this school up until today. I joined UNISA and studied my BA degree. I also joined Uplands Outreach where I managed to get my ACE (Advanced Certificate in Education) in Maths through the University of Johannesburg. My children: I have one child who is at Wits University studying a B. Commerce. He will be doing his second year this year. My favourite Maths topic: My favourite topics are trigonometry and geometry. A learner must first think before attempting to answer any question. My favourite colour: I do not have a specific colour. All colours are the same to me. I only match the different colours when I am wearing clothes. My favourite food: I don’t have a specific food. Any food that comes in front of me I eat. I choose between traditional food like morogo and meat. Morogo is better than meat. My favourite way to pass the time: I like to watch TV and my favorite programmes are sports and religion programmes. I like gospel songs. I also enjoy reading. My favourite part of T4E: I have been deeply involved with Uplands Outreach since it was established. The T4E (Teachers for Excellence Maths Programme) helped me a lot by developing my knowledge of Maths, and a little bit of knowledge in computers. By participating in the T4E programme, we managed to be provided with laptops, data projectors, and printers which we are using at our schools. The support materials I received during the T4E helped a lot during my teaching last year. I managed to produce good results last year because of the programme. Concluding thoughts: Why is Maths important in every day life? We need to be able to do the following: Count and do calculations using numbers Know about money and how to do calculations Measure and to do calculations Recognise shapes and know some of their properties Understand and be able to use fractions and percentages Interpret data and graphs Recognise and use patterns to make predictions Thank you for reading this newsletter. Remember, we want to hear from you! Please send us any questions, comments or suggestions to [email protected] or [email protected]. ~ End of February 2015 Newsletter ~ 9
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