Help your child with Maths - Year 9 Homework and Revision Helper
This guide provides links to instructional videos covering the Maths skills as part of the Year
9 syllabus. For further information or if you have any questions please contact Mr Guiney.
Your support can make the difference!
Topic 1: Number
Finding Factors
https://corbettmaths.com/2012/08/24/factors/
Working out multiples
https://corbettmaths.com/2012/08/11/1335/
Common Factors and HCF (Highest Common Factor)
https://corbettmaths.com/2012/08/24/common-factors-and-hcf/
Common multiples and LCM (Lowest Common Multiple)
https://corbettmaths.com/2012/08/11/lcm-and-common-multiples/
Finding the product of primes
https://corbettmaths.com/2012/08/20/product-of-primes/
Using the product of Primes to find Highest Common Factor/ Lowest Common Multiple
https://corbettmaths.com/2012/08/20/lcm-and-hcf-using-product-of-primes/
Topic 2: Angles and Parallel Lines
Parallel Lines
https://corbettmaths.com/2013/04/04/parallel-lines-definition/
Angles and parallel lines
https://corbettmaths.com/2013/04/04/parallel-lines-angles/
Angles in straight lines
https://corbettmaths.com/2013/12/19/angles-straight-line-video-35/
Properties of Quadrilaterals
https://corbettmaths.com/2013/12/21/names-of-quadrilaterals-video-2/
Angles in quadrilaterals
https://corbettmaths.com/2013/03/17/angles-in-quadrilaterals/
Topic 3: Algebra 1: Expressions and formula
Forming algebraic statements
https://corbettmaths.com/2013/03/12/forming-algebraic-notation/
Substitution in algebraic expressions
https://corbettmaths.com/2012/08/20/substitution-into-expressions/
expanding brackets in algebra
https://corbettmaths.com/2013/12/23/expanding-brackets-video-13/
Topic 4- Number: Decimals
Multiplying decimals
https://corbettmaths.com/2013/02/15/multiplying-decimals-2/
Division of decimals
https://corbettmaths.com/2012/08/21/dividing-decimals-by-whole-numbers/
Division by decimals
https://corbettmaths.com/2013/02/15/division-by-decimals/
Division by 10, 100, 1000
https://corbettmaths.com/2013/05/19/division-by-10-100-and-1000/
Topic 5 – Data Handling: Displaying Data
Drawing Scatter Graphs
https://corbettmaths.com/2012/08/10/scatter-graphs/
Reading Scatter Graphs
https://corbettmaths.com/2012/08/10/scatter-graphs/
Drawing Pie Charts
https://corbettmaths.com/2013/02/27/drawing-a-pie-chart/
Reading Pie Charts
https://corbettmaths.com/2013/05/25/interpreting-pie-charts/
Drawing Stem and Leaf diagrams
https://corbettmaths.com/2012/08/02/drawing-stem-and-leaf-diagrams/
Reading Stem and Leaf Diagrams
https://corbettmaths.com/2012/08/02/reading-stem-and-leaf-diagrams-video/
Topic 6: Linear equations
Solving Equations
https://corbettmaths.com/2012/08/24/solving-equations/
Forming Equations
https://corbettmaths.com/2013/04/20/forming-and-solving-equations/
Topic 7: Fractions
Improper fractions to mixed numbers
https://corbettmaths.com/2013/02/15/improper-fractions-to-mixed-numbers/
Adding and subtracting fractions (same demoninator)
https://corbettmaths.com/2013/02/15/adding-fractions-same-denominator/
Adding and subtracting fractions (different demoninator)
https://corbettmaths.com/2012/08/21/fractions-addition-and-subtraction/
Topic 8: Algebra
Straight line graphs
https://www.youtube.com/watch?v=VDoyiINF3Ek
Conversion graphs
https://www.youtube.com/watch?v=tqV1nTNCkJ8
Distance/Time graphs
https://www.youtube.com/watch?v=s7gIqkOUQCM
Topic 9: Percentages
Percentages of an amount – mental maths
https://corbettmaths.com/2012/08/20/percentages-of-amounts-non-calculator/
Percentages of an amount – using calculator
https://corbettmaths.com/2013/02/15/percentages-of-an-amount-calculator/
Decimals to Percentages
https://corbettmaths.com/2012/08/19/decimals-to-percentages/
Fractions to Percentages
https://corbettmaths.com/2013/03/29/fractions-to-percentages/
Topic 10: Shape, Space and Measures
Area of a triangle
https://corbettmaths.com/2013/12/20/area-of-a-triangle-video-49/
Area of a parallelogram
https://corbettmaths.com/2013/12/21/area-of-a-parallelogram-video-44/
Area of a trapezium
https://corbettmaths.com/2012/08/02/area-of-a-trapezium-video/
Topic 11: Ratios
Simplifying Ratio
https://corbettmaths.com/2013/03/03/simplifying-ratio/
Ratio and proportion using unitary method
https://www.youtube.com/watch?v=y-6kSwn-2sI
Topic 12: Transformations: Reflection and Translation
Reflections
https://corbettmaths.com/2012/08/19/reflections/
Describing Reflections
https://corbettmaths.com/2013/06/23/describing-reflections/
Finding the mirror line of reflections
https://corbettmaths.com/2013/03/29/finding-the-mirror-line/
Translations
https://corbettmaths.com/2012/08/10/transformations-translations/