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

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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!

Regular Rings 2

Age 7 to 11 Challenge Level:

Children at St. George's School sent in the following three designs, well done indeed. Hopefully they will inspire others to have a go at being creative with this activity's ideas.