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

Introduces the different forms of water in our world; the water cycle; stages in the life of a river; ocean currents, waves, and tides; lakes; and water pollution.

Explains what maps are and why they are used, introduces symbols found on maps, and describes how cartographers map the world. Includes related activities.

Examines, in text and labelled diagrams and illustrations, how different types of mountains were formed, the composition of various kinds of rock, volcanic mountains, and the process of erosion. Includes instructions for related projects.