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Homes

There are to be 6 homes built on a new development site. They could be semi-detached, detached or terraced houses. How many different combinations of these can you find?

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Stairs

This challenge is to design different step arrangements, which must go along a distance of 6 on the steps and must end up at 6 high.

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Train Carriages

Suppose there is a train with 24 carriages which are going to be put together to make up some new trains. Can you find all the ways that this can be done?

Cuisenaire Counting

Stage: 1 Challenge Level: Challenge Level:1
Can you use just white rods?
Can you use just red rods?
Can you use a mixture of red and white rods?
Could you put the rods in a different order?