HEATKEYS

Coolmath has a ton of cool math games and puzzles, lots of really clear math lessons (arithmetic, fractions, decimals, algebra, etc.), fractals, geometry, tessellations and more. Tons of very cool math stuff for kids, teens, parents and teachers too!

Wolfram|Alpha gives you access to the world

GrabCAD - a free CAD model library with 2D / 3D CAD files available for software like SolidWorks, AutoCAD, Autodesk Inventor, Solid Edge, SketchUp etc.

Dynamic worksheets for students of all ages practicing all kinds of school stuff

Comprehensive encyclopedia of mathematics with 13,000 detailed entries. Continually updated, extensively illustrated, and with interactive examples.

Math games, fun math lessons, puzzles and brain benders, flash cards for addition, subtraction, multiplication and division, geometry, fractals and polyhedra

Software by SpiteNET. Card games -SpiteNET: Spite and Malice card game, interactive solitaire. A card game with an attitude! Cassino by SpiteNET and Spiteful Bank card games. Wallpaper Hanger: Automatic wallpaper changer. Free Bass Guitar fretboard l...

Puzzles made by Tony Fisher between 1981 and the present. Check out the new puzzle shop

Software3D describes software by Robert Webb, which includes software for viewing and building polyhedra

Geomag Wiki is a community site that anyone can contribute to. Discover, share and add your knowledge!