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Construct-o-straws

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

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Matchsticks

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

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Tangram Paradox

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!

Frogs

Stage: 2 and 3 Challenge Level: Challenge Level:1

Keep a record of the number of jumps and the number of slides.

Try increasing the number of frogs on each side by one at a time. What patterns can you see?


See below for a flash-based interactive frog environment that counts the number of jumps and slides for you.

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