David Glover

Hands-on experiments introduce such structures as skyscrapers, dams, keystone bridges, igloos, and lock gates and show the materials used, the method of construction, and the source of strength.

An illustrated book of projects exploring the mysteries of time and how it is measured.

Uses activities and projects to introduce how electricity and magnets work at home and in the everyday world.

Introduces the principles of pulleys and gears as simple machines, using examples from everyday life.

"Solve the mystery of a burglary at the mansion of mazes, using math to solve geometry puzzles involving shapes, space, and measurements"--

"Why has the base crew on the Planet of Puzzles disappeared? Your mission is to rescue the crew, using your knowledge of data handling, including tables, charts, graphs, averages, and probability"--

Uses activities and experiments to introduce the properties of light and sound.