Picturing with Rods

Picturing with Rods

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.

Rod Fractions 

Age 7 to 14 Challenge Level:
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?

Colour Building 

Age 11 to 14 Challenge Level:
Using only the red and white rods, how many different ways are there to make up the other rods?

Searching for Mean(ing) 

Age 11 to 16 Challenge Level:
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?

Combining Lengths 

Age 11 to 16 Challenge Level:
How many different lengths is it possible to measure with a set of three rods?

Different by One 

Age 14 to 16 Challenge Level:
Can you make lines of Cuisenaire rods that differ by 1?

Cuisenaire Environment 

Age 5 to 16 Challenge Level:
An environment which simulates working with Cuisenaire rods.