DONE -Challenge problems - Yr 4-5.

Problems from first few chapters of First Steps Olympians book - Yr 7+.

Problems from Mathematical Miniatures book - Yr 11+.

Mixture of C-S inequality, Diophantine equations and summation/factorisation puzzle - Yr 11+.

DONE - Various algebra exercises - mainly exponents/logs.

DONE-Various problems, mostly from AMC

DONE - Various problems on all subjects