One of the best, and funnest, ways to "internalize" a lesson about angles is to eat one. The girls had fun eating their angles. We started by cutting a round, pre-cooked pizza crust, into fourths, each having a 90 degree or right angle. Two of them put together were equal to 180 degrees, so they were supplementary angles.
We reinforced the concept of complementary angles (two angles whose measurement combined is equal to 90 degrees) by having the girls cut their 90 degree angle into two angles. Then they got to put on their toppings. Yum, yum, yum!
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