median
don steward
mathematics teaching 10 ~ 16

Wednesday, 29 May 2013

equivalent things

the intention of this first resource is that students substitute the given input values
and then, maybe with some nudging, appreciate that there are shorter rules that give the output numbers from the input numbers

and that these simpler expressions can be obtained by cancelling the algebraic fraction



















these resources involve justifying then creating equivalent (same only look different) expressions to the one in the middle

students can be asked to add their own expressions or versions








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