median
don steward
mathematics teaching 10 ~ 16

Friday, 23 March 2012

boxes





















once the 'boxes' format/diagram has been fairly well established, students might be helped to become aware that all ratio and percentage problems are essentially the same

they can all be transformed into a 'boxes' format: that of being given three numbers and finding a fourth - by multiplying and dividing only

examples of this 'translation' to a boxes format/routine:









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