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This inspiring biographical series ties in with elementary history, science, and social studies curricula, providing teachers with a valuable interdisciplinary resource. With these books, young readers will discover historical figures who devoted their lives to making the world a better place, and changed the course of history. Text copyright 2004 Lectorum Publications, Inc.

Defines pulleys, explains their functions, and suggests simple experiments to demonstrate how they work.

Solar Energy Is Explained. Included In This Book Is Where It Comes From, Who Uses It, And The Positive And Negative Benefits Of Using It. Correlated To Common Core, Texas TEKS, Virginia Sols, And Georgia Performance Standards.

The Uses Of Wind Energy Is The Topic Of This Book. Explains The Positive And Negative Impact This Form Of Energy Can Have On Our World.

Después de Todo lo que fuimos, en este segundo poemario Alberto Villarreal nos conduce por las diversas formas del amor y el enamoramiento; de sus escenarios imposibles, sus momentos memorables y algunas veces fugaces. Un viaje tan divertido como doloroso, pero en el que siempre valdrá la pena aventurarse. Escribir siempre me lleva a pensar en ti. Eres tú quien llena los espacios en blanco. La idea de ti y tú. Lo que fuimos y seguiremos siendo. Esta historia no tiene fin. —Alberto Villarreal.

Explores The Number Twelve With Relationship To Time, Counting, And Things That Are Sold By The Dozen.

Teach students about trading and buying goods and services. In this Spanish-translated book, readers will learn about supply and demand, and learn the difference between wants and needs. Featuring images that support the informational text, students will build social studies content-area literacy and reading skills.

Este libro entusiasmará a muchos jóvenes con el trabajo científico. Consta de 140 experimentos en tres niveles según su dificultad, y en cada uno el autor explica con claridad lo que pasa. Estimulará el asombro ante fenómenos que vemos cada día y llevará al lector a preguntarse por qué son así.