dimarts, 9 de febrer de 2010

These are some instructions for doing a hands-on activity :
Take a piece of cardboard
Draw two squares of different sides a and b
Draw two identical rectangles, whose sides are a and b
Cut the four figures with a cutter or a pair of scissors.
Joining some pieces of cardboard, two, three or four of them write down formulas about the areas of the figures together.
Example:

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