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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!

Jomista Mat

Age 7 to 11 Challenge Level:
This image is intended as a stimulus to encourage children to talk about what they see. You could ask them to discuss first in pairs and then to share their ideas with the whole group. This is an opportunity for pupils to refine their use of mathematical language and this discussion will help them decide how to reconstruct the mat.