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Make a cube out of straws and have a go at this practical challenge.


Reasoning about the number of matches needed to build squares that share their sides.

Little Boxes

How many different cuboids can you make when you use four CDs or DVDs? How about using five, then six?

Move Those Halves

Age 7 to 11
Challenge Level
Here's a green A4 sheet and its two halves which are see-through orange and blue sheets.

Explore where you can put these two halves and look at the overlap and the uncovered green parts.

There are no particular rules, it's just a matter of having an A4 sheet and the two transparent A5 sheets.

What different shapes and areas can you discover?