Stage: 3 Challenge Level: 
| What sort of number of tiles must you use to make a square? |
| What sort of number of tile edges must fill the perimeter of the square? |
smartphone. Interactivities. Visualising. Compound transformations. Squares. Mathematical reasoning & proof. Working systematically. Generalising. Shape, space & measures - generally. Cubes.
Published November 2002,December 2002.
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