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problem

Journeys

7 to 11

Investigate the different distances of these car journeys and find out how long they take.

problem

Robotic rotations

11 to 16

How did the the rotation robot make these patterns?

problem

Folded number line

7 to 11

When I fold a 0-20 number line, I end up with 'stacks' of numbers on top of each other. These challenges involve varying the length of the number line and investigating the 'stack totals'.

problem

Favourite

Swimming pool

5 to 11

In this problem, we're investigating the number of steps we would climb up or down to get out of or into the swimming pool. How could you number the steps below the water?

article

The Four Colour Conjecture was first stated just over 150 years ago, and finally proved conclusively in 1976. It is an outstanding example of how old ideas can be combined with new discoveries. prove a mathematical theorem.

article

Going for games

5 to 11

In this article for teachers, Liz Woodham describes the criteria she uses to choose mathematical games for the classroom and shares some examples from NRICH.

article

A problem is a problem for all that...

The very problem with problems, namely that they should result in you being stuck, is at the heart of what problem-solving is about. In this article for teachers I talk about just a few of the other problems with problems that make them such a rich source of mathematics.

problem

Network trees

14 to 18

Explore some of the different types of network, and prove a result about network trees.

problem

Favourite

Mixing lemonade

11 to 14

Can you work out which drink has the stronger flavour?

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Journeys

Combining coins

Robotic rotations

Folded number line

Swimming pool

The four colour theorem

Going for games

A problem is a problem for all that...

Network trees

Mixing lemonade