NRICH Online Maths Club (Popularity: )
http://www.nrich.maths.org.uk/ Monthly on-line magazine, puzzles, articles, children's solutions to mathematical challenges, answering service and special interest discussion groups.
UK Mathematics Trust (Popularity: )
http://www.ukmt.org.uk/ Organises national mathematics competitions in the United Kingdom for 11-18 year old school pupils. Includes sponsoring some contests for the ...
MathExpo (Popularity: )
http://www.mathex.org/ A travelling exhibition "Experiencing mathematics!" designed to show that mathematics is: astonishing, interesting and useful; accessible to everyone; plays a ...