median
don steward
mathematics teaching 10 ~ 16

Sunday, 6 March 2011

expressions pyramid

addition pyramid: each box is the sum of the two boxes beneath it









which boxes can you put each of the six expressions into to form an addition pyramid:








students could make up their own expressions pyramid, cut up the six pieces and give it to their neighbour to make into a pyramid (suggested in a session on algebra with Pat Perks and Steph Prestage, Birmingham University)

find as wide a range of expressions as you can that result in a top number of 5
(e.g. 2 + 3g     1 - g     1 - g   on the bottom row)

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