Accompanied by her daemon, Lyra Belacqua sets out to prevent her best friend and other kidnapped children from becoming the subject of gruesome experiments in the Far North.

This updated and expanded step-by-step guide enables ordinary folks to construct more than 13 awesome ballistic devices using inexpensive household or hardware store materials. Clear instructions, diagrams, and photographs show how to build projects ranging from the simple, a match-powered rocket, to the more complex, a tabletop catapult, to the classic, the infamous potato cannon, to the offbeat, a Cincinnati fire kite. With a strong emphasis on...

Making a terrible discovery at the stream about a mysterious threat that is endangering its magical creatures, Zoey and Sassafras race against time to discover the source of the problem and save the Merhorse species.

Presents twenty activities that test the scientific properties of elements of popular children's books, including creating slime, shaking cream into butter, and constructing an air balloon.

After surviving horrific conditions in the Maze, Thomas is entrapped, along with nineteen other boys, in a scientific experiment designed to observe their responses and gather data believed to be essential for the survival of the human race.

Presents simple chemical reaction science experiments and recipes for mixtures of varying viscosity. Presents simple science experiments and recipes for mixtures of varying viscosity.

Hundres of science experiments and projects are introduced.

There's no need for expensive, high-tech lab equipment to conduct chemistry experiments -- you probably have all you need in your home junk drawer. Turn three pennies and two galvanized washers into a simple battery. Crush a soda can using atmospheric pressure. Convert an LED flashlight into a simple electrolyte tester. Split liquid water into two unique gasses, or use cornstarch to create a gooey, mysterious, non-Newtonian fluid. And model radioactive...

"Children love challenges, especially ones that involve hands-on experimentation and friendly competition. Can they build a bridge using only pasta and glue, one that a toy car can drive both under and over, and is sturdy enough to carry a considerable weight? Can they construct a "roller coaster" from recycled cardboard tubes in which the marble "car" jumps a track to land safely at its final destination? And can they create a device to safely catch...