Text and photographs examine the inner-workings of toys, discussing the scientific principles that relate to toys, and providing instructions for a related project.
Explains how melting and freezing changes the forms of liquid and solids, what causes melting and freezing, and how water can exist as a liquid, solid, and gas.
"Living things depend on a few invisible but essential nutrients to survive. These nutrients each have their own purpose. But they are also interconnected in the nutrient cycle"--Provided by publisher.
An introduction to biking, skateboarding, snowboarding, and surfing that explains the physics behind each sport, describes different techniques and tricks, and traces the history of various styles of boards and bikes.
An introduction to solids that explains how they are different from liquids and gases, describes how solids can change, and discusses the different forms of matter.
