Dover Children's Science

Over 50 safe tricks - all based on scientific principles. Grade-schoolers using common, everyday items will soon be performing such mystifying feats as making squares and lines disappear, creating a magical doorway out of paper, cutting glass with scissors, inserting a pin in a balloon without popping it, and much more.

Seventy-three easy experiments - requiring only materials found at home or easily available, such as candles, coins, steel wool, etc. - illustrate basic phenomena like vacuum, simple chemical reactions, and more. All safe. Modern, well-planned.

Discover the fascination of astronomy with 100 easy, inexpensive projects that promise loads of fun for sky watchers of all ages. Geared toward beginning astronomers from junior high school level and up, this entertaining guide was written in direct, nontechnical terms by an experienced astronomer and well-known author. Daylight and nighttime activities include sightings of comets, meteors, stars, and planets as well as phases of the Moon, halos, twilights, and many other intriguing phenomena. These interesting, instructive activities and projects require just the naked eye and ordinary household materials. In addition to a wealth of activities for families to enjoy together, Seeing the Sky also offers a fine resource for classrooms, astronomy clubs, nature societies, and other groups. This updated edition features a new Preface, two new tables, and a revised Sources of Information list that includes current websites.

This inexpensive volume showcases an array of curious creatures: a blob-like amoeba; a slipper-shaped paramecium and its mortal enemy, the suctorian; and many others. The authors recount the feeding, reproductive, and defensive strategies employed by these animals in easy-to-understand language that opens the door to a wonderful world of discovery. 37 illustrations.

Intriguing, abundantly illustrated collection of 40 experiments to attract and stimulate young minds. Subjects range from electricity and magnetism to weather, water, distance and time. Among the projects: flight testing homemade rocket balloons and tracking electricity around the house.