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 Thirteen the Amendment that freed the slaves, end of the war, and the death of President Abraham Lincoln.

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.

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.

Think there's just one fairy tale with a beautiful girl and an evil stepmother? Think again! Cultures all around the world have their own Snow White stories. Visit Albania, Germany, Mozambique, and Turkey, and find out who meets 40 dragons instead of "seven dwarfs," and on whose forehead a bright star shines. Fully translated Spanish text.

Colección de 26 cuadernos independientes de los cuatro cursos de Secundaria. Para trabajar y consolidar todos los contenidos de la ESO de acuerdo a las necesidades de cada alumno.

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 the principles behind simple machines. Each volume includes three diagrams to enhance comprehension. The text uses authentic language and is designed to build reading skills as well as knowledge of basic science concepts.

"Cuando Daniel Hernández tenía veinte años, trabajaba como pasante con la congresista Gabrielle Giffords. El 8 de enero de 2011, alguien disparó contra Giffords. La agilidad mental de Daniel le salvó la vida a Giffords hasta que llegaron los paramédicos y la llevaron al hospital. Muchos han reconocido la valentía y heroísmo de Hernández, incluyendo al presidente Barack Obama. Sin embargo, aunque tal vez ese haya sido su momento más visible y de mayor fama, Daniel Hernández es un extraordinario individuo que ha tenido ya muchos logros en su corta vida y se propone conquistar muchos...