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Polydron

This activity investigates how you might make squares and pentominoes from Polydron.

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Colouring Triangles

Explore ways of colouring this set of triangles. Can you make symmetrical patterns?

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A Cartesian Puzzle

Find the missing coordinates which will form these eight quadrilaterals. These coordinates themselves will then form a shape with rotational and line symmetry.

Necklaces

Stage: 1 and 2 Challenge Level: Challenge Level:1
How will you record what you've found out?
Is there any way of making sure you have them all?
The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice. More information on many of our other activities can be found here.
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NRICH is part of the family of activities in the Millennium Mathematics Project.