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All Change

There are three versions of this challenge. The idea is to change the colour of all the spots on the grid. Can you do it in fewer throws of the dice?

What's in a Name?

Here's a very elementary code that requires young children to read a table, and look for similarities and differences.

How Tall?

Age 5 to 11
Challenge Level

Could you use any other objects to help you?

Can you estimate how tall the tree is?