Gifted Issues Discussion homepage Forums General Discussion APS article on math ed: A Math Paradox

Here are some ideas from Developing Math talent (Davidson recommends this book)

accelerate students who have mastered computation, Include open-ended problems and projects that challenge able students to keep their interest in the subject.

enrichment topics:
Fractals and chaos
the Pythagorean theorem and Triples
Fibonacci Numbers
Finite differences
Pascal's triangle
Golden triangles
magic Squares
Other numerical systems (Babylonian, Egyptian, Chinese, Mayan, Roman, ect.
Pi
Topology
Pendulum and other applied physical problems
Transformational geometry
Combinatorics
Graph theory
Computer programming and robotics, including Logo and Lego- logo

Hope this helps. I don't even know what most of this means but I have in mind to pace my DS by giving him some programming to do at school to replace some of the repetions in work he doesn't need. I'm hoping I can make this work.