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### Number and algebra

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# Shape Times Shape

Where could you start?

What can you tell from the first multiplication with three purple squares and a yellow semi-circle?

Perhaps you can use what you now know to help you with another calculation?

How will you remember what you have tried and what you have found out? You could use this sheet to keep a note of what you think the shapes stand for.

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Age 7 to 11

Challenge Level

- Problem
- Getting Started
- Student Solutions
- Teachers' Resources

Where could you start?

What can you tell from the first multiplication with three purple squares and a yellow semi-circle?

Perhaps you can use what you now know to help you with another calculation?

How will you remember what you have tried and what you have found out? You could use this sheet to keep a note of what you think the shapes stand for.

There are three tables in a room with blocks of chocolate on each. Where would be the best place for each child in the class to sit if they came in one at a time?

Cut four triangles from a square as shown in the picture. How many different shapes can you make by fitting the four triangles back together?

Can you dissect an equilateral triangle into 6 smaller ones? What number of smaller equilateral triangles is it NOT possible to dissect a larger equilateral triangle into?