This link takes you to "5 numbers".These are some radio programs that introduce some interesting maths, beyond the curriculum. I think they are excellent!
And if you enjoyed those programmes you may enjoy "5 shapes".These bring Maths and Art together...a bit like The Da Vinci Code does!
The nrich.site has lots of puzzles and problems. There is also a page where you can ask for help with homework!
This site is a worldwide censusof school children.You may like to have a browse. We are going to take part at School, and contribute to their findings!