Introduces in question and answer format the world of dinosaurs and the various species of land, sea, and air creatures who lived during the Mesozoic era.

Questions and answers provide basic information about magnets and magnetism. Includes several experiments.

Questions and answers provide basic information about rocks and minerals, including their formation, properties, and identification.

Answers questions about the stages in the life of a pond and about the plants and animals that may be found in and around ponds.

Answers such questions as "What is a star?", "Why do stars twinkle?", and "How long does a star live?"

Answers questions about the seasonal changes produced by variations in the angle at which the sun's rays strike the earth.

Studies the highly visible and diverse world of trees, flowers, and other green-and-growing things, with their distinct ways of reproduction, respiration, photosynthesis, and nourishment. Includes suggestions for projects and activities.