DK Children's Encyclopedia

A simple chain to complement your other accessories perfectly. Necklace features a diamond cut seamless rope design crafted in 14k gold. Approximate length: 24 inches.

"From the Chain Collection. A sleek sterling silver design that's perfect on it's own or with your favorite enhancer. Sterling silverLength, about 24""Lobster clasp closureMade in USA"

Build imaginative machines in this creative and addictively fun brainteaser

Turn cranks, rotate gears, pull levers, and more to build unique contraptions

Solve more than 200 challenging puzzles; put your machines to work

Physics engine with air-pressure, electricity, gravity, and particle effects

Experiment with gears, robots, explosives, and more in your own virtual lab