HEATKEYS

HowStuffWorks Science has explanations and colorful illustrations related to earth science, life science, and other wonders of the physical world.

Advertise and reach a broad-base audience of gear industry professionals and buyers with Gear Solutions magazine -- the complete online resource for the gear industry. Media kit available at Gear Solutions.

Scratch: a programming language for everyone. Create interactive stories, games, music and art - and share them online.

Automotive electrical training support for technicians, students, and teachers. Online ASE test prep practice exams, technical articles, tutorials.

Instructables is the Biggest How To and DIY community where people make and share inspiring, entertaining, and useful projects, recipes, and hacks.

Engineers Edge - Total Design, Engineering & Manufacturing Resouces

TK Solver, Roark

Helping us make and share calculations with MS Excel. XLC software to display MS Excel formulae in mathematical notation. Repository of solved problems covering many engineering topics. Site forum for software support and discussion of calculation. E...

This is a discussion forum used to discuss the FIRST Robotics Competition.

We are the leading supplier of metric Spur Gears, Helical Gears, Spiral & Striaght Bevel Gears, Miter Gars, Ring Gears, Screw Gears, Gear Racks, Worms & Worm Wheels, Ratchets & Pawls, Involute Splines, and related gearing items.