Stage: 2 Challenge Level: 
| You will need some yellow squares and red equilateral triangles. |  |
| Can you state what the rule is? How many equilateral triangles are needed next? How many squares are then needed? |
|
| Are any patterns emerging? |
Visualising. Addition & subtraction. Tangram. Compound transformations. Interactivities. Generalising. Working systematically. Polydron. Practical Activity. Creating expressions/formulae.
Published March 2003.
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