Investigations

Presents simple experiments that demonstrate states of matter and what happens to various materials when they are cooled.

Presents simple experiments that demonstrate states of matter and what happens to various materials when they are cooled.

Text and drawings introduce a wide variety of ships from early boats hollowed from logs to supertankers of today. Each section highlights a different type of ship and includes projects to recreate that type of ship.

Text and more than 250 illustrations explain to eight- to twelve-year-olds how the weather works, covering tornadoes, snow, rainbows, hurricanes, humidity, and other topics; also features step-by-step directions for fourteen related projects.

A visual reference guide to cameras, explaining what they are and how they work, discussing the process of photography and film development, and including illustrations, and instructions for related experiments.

Presents simple hands-on experiments that demonstrate why some objects float and others sink.