When working on the activities in this feature, you'll need to be able to visualise what's going on. To help you, we have provided some interactive Cuisenaire Rods that you can use to compare lengths, try out different combinations of rods, and make sense of questions about fractions and ratios.

Please send in your solutions to the problems by Monday 3 February.

Please send in your solutions to the problems by Monday 3 February.

Pick two rods of different colours. Given an unlimited supply of rods of each of the two colours, how can we work out what fraction the shorter rod is of the longer one?

Using only the red and white rods, how many different ways are there to make up the other rods?

If you have a large supply of 3kg and 8kg weights, how many of each would you need for the average (mean) of the weights to be 6kg?

How many different lengths is it possible to measure with a set of three rods?

Can you make lines of Cuisenaire rods that differ by 1?

An environment which simulates working with Cuisenaire rods.