median
don steward
mathematics teaching 10 ~ 16

Tuesday, 3 December 2013

base 10 (Dienes) blocks

10 little cubes ('peas') in the stick ('chip')
10 chips in the square ('waffle')
10 waffles in the BIG cube

it's better to hold them up
if you can find one of each





how many peas in a waffle?
how many chips in a BIG cube?
etc.


if the chip is 1
what are the rest? (pointing)

what if the BIG cube is 1?
what if the waffle is 5?
what if the BIG cube is 37?
what if the chip is 4.6?
etc. etc. etc.













a powerpoint

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