Matt and Katie were using Cuisenaire rods. They placed rods end to end to make 'trains'.
Here are their two trains:
What is the same about the two trains?
What is different?
You might have noticed:
Can you make some more trains the same length as Matt's and Katie's trains, each using rods of just one colour?
How many different trains can you make?
If you haven't got any Cuisenaire rods, you may like to use the interactivity below to try out your ideas.
You may be interested in the other problems in our Cuisenaire Feature.