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What Is the Circle Scribe Disk Compass?

Introducing a geometrical instrument with 3 basic capabilities.

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Arranging Squares

A task which depends on members of the group working collaboratively to reach a single goal.

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Triangles in the Middle

This task depends on groups working collaboratively, discussing and reasoning to agree a final product.

Natural Shapes

Stage: 4 Challenge Level: Challenge Level:1
You may not be able to identify what all of the pictures are. From top to bottom along the first column, then the secnd column:

Zebra
Haemoglobin (protein present in Red Blood cells)
Honeycomb
Red blood cells
Villi (small foldings in the small intestine)
Plant Cell
Coccolith
Pinecone
Snail
DNA
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.