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Children learn about the features of Tyrannosaurus Rex, what Tyrannosaurus Rex ate, and how it attacked other dinosaurs.

Examines the nature of inclined planes and wedges, how they can reduce the amount of force necessary to perform work, and ways in which they are used.

This informative, Spanish-translated book teaches early readers about the importance of government and how it impacts our lives. Readers will learn about taxes, the three branches of government, voting, and more. Engaging, primary source documents and images keep students reading as they build their literacy skills and social studies content knowledge.

Con páginas desplegables y atractivos modelos realistas de las especies de dinosaurios más populares, este libro es una maravillosa introducción al mundo de estas fascinantes criaturas. With foldout pages and beautiful, realistic models of the most popular dinosaur species, this book is an incredible introduction to the world of these fascinating creatures.