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20 by 20 Square

A one-of-a-kind crossing!

You have to cross the lake to get to the island, but you only have wood sticks! Can you find a way to reach the island? Good luck!

How many different solutions can you find? What would happen if the lake were a different shape? Don’t hesitate to go beyond the challenge and make new discoveries!

You can get more information about this activity in the “Teachers” section below.

  • Many solutions are possible. By changing the dimensions, you get an array of different problems.

  • Planning notes