$49.95 from Edmund Scientifics - Children ages 8 and up learn about the essential science of mechanical physics while building dozens of working models of real-world machines.

$5.95 from Edmund Scientifics - Change the color just by squeezing this magic light ball! Covered in an ergonomically designed ribbed rubber, they are perfect for dazzling juggling shows, magic games, or just as cool tactile mood lights.

$79.95 from Edmund Scientifics - Construct your own remote control tank. Building is only half the fun. Everything you need to create infrared remote controlled tanks is included, and once built they're ready for combat.

$23.95 from DiscoverThis.com - An introduction to mechanical physics. Build 12 models and then conduct experiments with the models to learn about forces and simple machines. Each model demonstrates a fundamental idea in mechanical physics. Ages 8 and up.

$44.49 from Sciencekit.com - This is an easy way to grow and contain crystals for studying using our new crystal collecting paper. The crystals produced are beautiful. Includes 40 dishes.

$57.95 from DiscoverThis.com - Easy-to-read, illustrated, lab-style manuals take you through each electronic experiment step-by-step. Learn basic principles of electricity, electronics, physics and magnetism! Ages 10 and up.

$77.00 from Edmund Scientifics - For the young robotics engineer. Learn all about electronics from building your own robot. Kit provides detailed instructions and background information. Requires only simple hand tools to assemble. 180 programmable commands.

$14.95 from Edmund Scientifics - Uncover the science behind mysteries of vision and sight with this comprehensive kit. Follow the kit's simple instructions for a series of experiments to intrigue any young scientist.

$11.98 from Things You Never Knew Existed - What makes this mystery top go on and on at 2500 r.p.m. with no apparent energy source? Baffling brain buster that bugs the brightest. Demonstrated at science fairs and conventions.

$15.95 from Edmund Scientifics - An ideal starter kit for exploring rocketry. With an easy to read instruction book and dozens of fun kit components, you'll learn about gravity, weightlessness, centrifugal force, thrust, Newton's Laws of Motion, and more.