Explains how early inventions, including those of the sundial and compass, as well as more recent discoveries, have helped scientists explore outer space; includes science experiments relating to these instruments.

Explains the operation of common devices such as the doorbell, alarm clock, photocopier, radio, television, and computer; includes instructions for science experiments relating to these.

Briefly describes what electricity is, how various people developed a better understanding of this form of energy, and how electricity is generated. Includes a related activity.

An introduction to the ideas and technical developments that produced today's automobiles. Includes a "hands on" activity.