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### Number and algebra

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# Tetrahedron Faces

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Age 7 to 11

Challenge Level

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

Where could the other
colours go?

Can you find another way?

How do you know the tetrahedra are different?

How will you record your tetrahedra?

Can you find another way?

How do you know the tetrahedra are different?

How will you record your tetrahedra?

How many different cuboids can you make when you use four CDs or DVDs? How about using five, then six?