Simple Machines (Rookie Read-About Science: Physical Science: Previous Editions) - Rookie Read-About Science

From friendly dolphins to giant pandas, from icebergs and glaciers to energy from the sun, from magnets to solids, liquids, and gases, Rookie Read-About Science is a natural addition to the primary-grade classroom with books that cover every part of the science curricula. Includes: animals, nature, scientific principles, the environment, weather, and much more!