NRichMathematics, Education, Information Technology and the Internet- and a few simple sums too... so you can do some maths now!
FibonacciNRICH publishes children's solutions to mathematical challenges. NRICH provides an answering service and many special interest discussion groups.
The Math ForumFibonacci Numbers and Nature with sections such as why Fibonacci numbers appear in various "family trees" and the patterns of spirals of leaves and seeds.
Resources, discussion groups newsletters, problems of the week and ask Doctor Math.