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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.
What is the greatest number of squares you can make by overlapping three squares?
Find all the numbers that can be made by adding the dots on two dice.
Andrew decorated 20 biscuits to take to a party. He lined them up and put icing on every second biscuit and different decorations on other biscuits. How many biscuits weren't decorated?