median
don steward
mathematics teaching 10 ~ 16

Wednesday, 28 January 2015

linear rules, with contexts

many of these questions are adapted from the WJEC/Eduqas past GCSE papers










why 'm' and 'c' are the letters used (maybe not true but it makes a sensible story)
m = multiplier
c = constant











many thanks to Dan Meyer and also to Andrew Stadel for the insightful idea of using the heights of various numbers of stacking cups as a neat example of a linear relationship

this lesson benefits from the use of actual polystyrene or cardboard cups


these pictures are from Andrew Stadel's work












Fawn Nguyen's account of her lesson sequence on 'stacking cups' is also helpful





what is the height and lip height for these cups?

stacks of two different sized cups are explored in Andrew Stadel's videos




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