Make a cube out of straws and have a go at this practical
Reasoning about the number of matches needed to build squares that
share their sides.
How can the same pieces of the tangram make this bowl before and after it was chipped? Use the interactivity to try and work out what is going on!
The video clip below shows a net made from Polydron. You can change the net using the drop down menu on the right hand side.
When you press play, you will see our mathematician attempt to assemble the net into a solid 3D shape. Sometimes he will succeed, sometimes he will fail.
Before watching each video clip, consider these questions: