Cómo podemos utilizar el tornillo?

Follows the life and career of the French scientist who proved the existence of germs and their connection with diseases.

Follows The Thirteenth Amendment That Freed The Slaves, The End Of The War, And The Death Of President Abraham Lincoln.

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.

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.

How does a liquid become a gas? Through evaporation! Evaporation helps make puddles disappear after it rains. In this Spanish-translated book, learn all about evaporation and how it happens. This 6-Pack includes six copies of this title and a lesson plan.

Presenta varios experimentos en cronometría. Para estudiantes de primaria (grados 4-6) y de secundaria (grados 7-9).

Presenta - 27 temas esenciales para adquirir los conocimientos gramaticales de un nivel B1. 2 apéndices, uno de formación de palabras y otro de uso de la perífrasis estar + gerundio. 1 test de autoevaluación del nivel B1.

¿Por qué tienes que guardar turno en los columpios?. Descubre cómo los buenos modales hacen del parque un lugar seguro y divertido para todos.