Puzzle
Ratio & proportionPuzzle
Code breaker:Direct and inverse proportion
Thirteen proportion problems: direct, inverse, squares, square roots and inverse squares. Find k, find y, then turn it round and find x, with a falling stone to finish. The Code Box includes the answers you get by forgetting the square or the square root. One per A4.
A free GCSE ratio and proportion puzzle with answers, spec code R13. It goes with the lessons on direct proportion: y = kx, inverse proportion: y = k/x, direct proportion: worded problems and proportion equations.
Lesson
Direct proportion:y = kx
Lesson
Inverse proportion:y = k/x
Lesson
Direct proportion:Worded problems
Lesson
Proportion equations
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