Stage: 3, 4 and 5 Challenge Level: 
Where to start?
With a large pentagram getting smaller - or a smaller one getting larger...
and
What is the relationships in the sizes?
With the flag the challenge is to colour things in and not lose track of where you are (not so difficult if you are already in the EU - I suppose!)
With a large pentagram getting smaller - or a smaller one getting larger...
and
What is the relationships in the sizes?
With the flag the challenge is to colour things in and not lose track of where you are (not so difficult if you are already in the EU - I suppose!)
Stage 5 - Reviewed 2012. Practical Activity. Games. Recursion. Mathematical reasoning & proof. Logo. Working systematically. Networks/Graph Theory. Visualising. Simultaneous equations.
Published April 2000.
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email: nrich@damtp.cam.ac.uk