Proportion Maths Home Page

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Lesson	Details & links	Assessed work / further work / QMA	My Learning	My Thinking	My Research	My Feelings	My Peers
1	Introduction to the idea of direct and inverse proportion   E.g. 8 pencils cost £2.40. How much do 11 cost? (non-calculator) E.g. 8 pencils cost £2.56. How many can be bought for £4.80? (calculator) E.g. It takes 4 men 12 hours to tarmac a road. How many men are needed to tarmac the same road in 8 hours? Proportion Intro CB
2	Solving proportion problems involving converting units of currency and best buy Best buy and units CB
3	Algebraic approach (finding the constant k) to solving problems involving direct proportion involving squares, cubes, roots and cube roots Direct and Inverse Proportion mymaths Direct Proportion JEE Direct Proportion - Powerpoint lesson
4	Algebraic approach (finding the constant k) to solving inverse proportion problems involving squares, cubes, roots and cube roots – great emphasis should be placed on showing method clearly and not using a calculator where appropriate Direct and Inverse Proportion mymaths Inverse Poportion - Powerpoint lesson
5	Draw graphs of variables that are in direct or inverse proportion. Understand that a straight line graph going through the origin indicates direct proportion whereas a curve with the shape of 1/x indicates inverse proportion. Extend to the idea that for the equation y = 3x2 if you plot y against x you will get a curve but if you plot y against x2 you will get a straight line going through the origin because y is directly proportional to x2
6	Main: mix of questions involving direct and inverse proportion