Explains what explorers do, looks at some of the tools they use to help them in their quests, and traces the history of exploration from the Vikings to the astronauts.
Provides information about the importance of clean water, air, and land; discusses what happens when those three elements become polluted; and explains how individuals can help fight against pollution.
Presents an introduction to a play, in simple text with illustrations, explaining what a play is, how they are performed, how they are written, and who works on them.
Examines a variety of animals that live on the Serengeti Plain in East Africa, including cheetahs, elephants, and giraffes. Features easy-to-read text, full-color photographs, a glossary, and a list of resources for further study.
