Snedden, Robert

Covers the inventions and technology used in ancient China and how their ideas influenced technology today.

Explores the history, culture, and traditions of the ancient Aztec, Inca, and Maya peoples of Mesoamerica.

This book discusses how materials are used, and what changes occur during the solid, liquid, and gas states of matter.

Explains basic concepts about rocks and soils, describes their composition and formation, and suggests activities and experiments to reinforce this information.

Examines tropical rainforests of Asia, Africa, and Central and South America, average rainfall, types of trees that grow there, deforestation, and the plants and animals that inhabit rainforests such as South American tapirs, monkeys, tigers of India, as well as a large variety of reptiles and insects.

Examines the tropical grasslands of parts of South America, Africa, India, and Australia, its climate, soils, and habitat for a variety of plants and animals including gazelles and antelope, grassland birds, wildebeest and lions, and other predators.

Traces the development of scientists' theories about energy from ancient times to the present.

Gives information on rocks, volcanoes, fossils, and soils.

Explains what the Internet is and what types of information and services it offers.

Explains the science concepts of forces and motion, discussing speed and acceleration, Newton's Laws, balanced and unbalanced forces, gravity, friction, pressure, and simple machines, and includes definitions of terms, and a look at how forces and motion are used in everyday life.