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Consecutive Numbers

An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.

Calendar Capers

Choose any three by three square of dates on a calendar page...

Building Tetrahedra

Can you make a tetrahedron whose faces all have the same perimeter?

Funny Factorisation

Age 11 to 16 Challenge Level:

This printable worksheet may be useful: Funny Factorisation.


Missing Multipliers might be a good problem to try before looking at this one.