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!
You could print out this sheet or draw the faces of the cube to help you. Cut out each one separately and move them around until they fit the views of the cube given. You might need some sticky tape!
Try concentrating on two the faces which are next to each other to start with. Which other face is near them?