You'll test the stability of a triangle and a square by standing them on a table and pressing on them. The one that changes shape less is more stable. 1. With your partner, build a triangle and a ...

Ah! Not really. But got your attention. Now. 3D shapes, they have 3 dimensions. Length, width and depth. What would the 3D version of a square be? A cube. A cube has 6 square faces which are all ...