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At a glance
problem

At a glance

14 to 16
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The area of a regular pentagon looks about twice as a big as the pentangle star drawn within it. Is it?
Napier's Bones
problem

Napier's bones

7 to 11
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The Scot, John Napier, invented these strips about 400 years ago to help calculate multiplication and division. Can you work out how to use Napier's bones to find the answer to these multiplications?
Cube Net
problem

Cube net

16 to 18
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How many tours visit each vertex of a cube once and only once? How many return to the starting point?
Smaller and Smaller
problem

Smaller and smaller

7 to 14
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Can you predict, without drawing, what the perimeter of the next shape in this pattern will be if we continue drawing them in the same way?
The Wheatstone bridge
problem

The Wheatstone bridge

16 to 18
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Explore the mathematics behind the famous Wheatstone Bridge circuit.

The yellow NRICH logo above the words 'Early Years', on a red background.
article

Young children's mathematical recording

3 to 7

In this article, Janine Davenall reflects on children's personalised mathematical recordings as part of a small research project based in her Reception class.

Network Trees
problem

Network trees

14 to 18
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Explore some of the different types of network, and prove a result about network trees.
Which spinners?
problem
Favourite

Which spinners?

14 to 18
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Can you work out which spinners were used to generate the frequency charts?

Pupils' recording or pupils recording
article

Pupils' recording or pupils recording

5 to 14
This article, written for teachers, looks at the different kinds of recordings encountered in Primary Mathematics lessons and the importance of not jumping to conclusions!
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