Can you make five differently sized squares from the tangram pieces?
Is there a best way to stack cans? What do different supermarkets do? How high can you safely stack the cans?
What is the greatest number of squares you can make by overlapping three squares?
We have a box of solid shapes. In it there are cubes, triangular prisms, cones, cuboids, cylinders and tetrahedrons.
Which of the buildings below would fall down if we tried to make them? Which ones would be unstable and possibly collapse?