"Computing Technology for Math Excellence is devoted to resources for teaching and learning mathematics (K-12 and calculus), technology integration, and the standards movement in education."

Today, you're in charge of the nation's finances. Some of your options have more short-term savings and some have more long-term savings. When you have closed the budget gaps for both 2015 and 2030, you are done. Make your own plan, then share it online.

"Jmath is a Computer Algebra System(CAS) for highschool students. Here are some key features of Jmath: - Plot mathematical functions. - Solve equations. - Find intersection. - Show min/max points. - Plot tangent to function. - Find derivative. - and more..."

"Easily incorporate computational thinking into your curriculum with these classroom-ready lessons, examples, and programs"

Lots of ideas that can be adapted for other grades as well

Math teacher and researcher Tom O'Brien offers resources and activities through this site, with planned updates each month to add more materials. These include books published by the UK's Association of Teachers of Mathematics--some out of print --now downloadable and available for purchase. Excerpts from the e-books are available free, as well as three articles by O'Brien and colleagues. O'Brien recommends software as well, some of which is available free of charge.

SOme great maths blog listed and discussed here.

"The social repository of the world's greatest brain teasers, logical puzzles and mental challenges. Join us to add, rate, and comment on puzzles! "

The Math 2.0 Interest Group is an international network of researchers, educators, families, community leaders and technology enablers. We are collaborating on a variety of research and development projects and conversation threads about social media as it relates to mathematics and mathematics education.

This slide show demonstrates some techniques that would be suitable for an experimental geometry project. The basic shapes of square and circle are explored using open source Geogebra and Dr Geo geometry software. The examples includes exercises in geometric construction, novel solutions and recursive (spiral) constructions. This is mathematics that can be done without algebra. There is some algebra on slide 18, to calculate the radius and area of a semicircle inscribed in a square.

A whole lot of maths papers and memos from New south Wales.