Levers Levels 29 Sapphire Key learning Area Technology/ScienceTheme How levers are used Title How Levers WorkText Type ExplanationPages 2–9Text Form Reference articleGenre Non-fictionPurpose To explai
Forces and motion are key concepts in the elementary science curriculum. This Spanish edition of How Simple Machines Work uses simple text and full-color photographs to help ELL students understand t
Stephen R. Covey believed there were only two ways to live life: a life of primary greatness or a life of secondary greatness. Through his books and speaking, he taught that the intrinsic rewards of p
From Stephen R. Covey—the late, legendary author of The 7 Habits of Highly Effective People—a set of principles for achieving a happy and fulfilling life of primary greatness.Many of us are hurting. W
From Stephen R. Covey—the late, legendary author of The 7 Habits of Highly Effective People—a new set of rules for achieving a happy and fulfilling life of primary greatness.Many of us are hurting. We
Kids use simple machines every day without realizing it. Teeth are wedges and so are knives, forks, and thumbtacks. Many toys such as slides, which are inclined planes, and seesaws, which are levers,
