Description
Binomal cube beech wood box
this set contains a wooden box and 8 cubes and a wooden box. the box has 2 editions :plywood and beech wood.
this material help children understand (a+b)²=a²+2ab+b² and (a±b)3=a3±3a2b+3ab2±b3
Binomal cube beech wood box
this set contains a wooden box and 8 cubes and a wooden box. the box has 2 editions :plywood and beech wood.
this material help children understand (a+b)²=a²+2ab+b² and (a±b)3=a3±3a2b+3ab2±b3
