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I have some rods that are different colours and different lengths.
I can arrange white and red rods in many different ways to be the same length as a yellow rod. Here are some of them:
Can you find all the ways of using red and white rods that are equivalent to a yellow rod?
How will you know that you haven't missed any out?
You could use the interactivity below to try out your ideas.
The dark green rod is longer than the yellow rod.
Can you find all the ways of using red and white rods that are equivalent to a dark green rod?
How will you know that you have found them all?
Find a great variety of ways of asking questions which make 8.
Vincent and Tara are making triangles with the class construction set. They have a pile of strips of different lengths. How many different triangles can they make?
Noah saw 12 legs walk by into the Ark. How many creatures did he see?