La Energía Solar (Solar Energy)

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

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.

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

Rhyming text is ideal for building phonemic awareness and phonics skills. This series uses delightful rhyming text and engaging photographs to introduce beginning readers to four common weather conditions. These books build the foundation for reading success and make learning about weather fun!

Horns, Humps, Or Hooks Are Found On A Wide Assortment Of Animals. This Book Provides Information On How These Special Body Parts Are Used And Why They Are Important.

Sofía Vasilievna Korvin-Krukovski Kowalevsky se sintió atraída por las matemáticas desde muy joven, pero para poder estudiarlas tuvo que vencer la oposición de su familia, que consideraba que su estudio no era apropiado para una joven. Se vio obligada a aceptar un matrimonio de conveniencia para así poder salir de Rusia y tener acceso a una educación de nivel superior. Tampoco en Alemania las cosas estaban mucho mejor, pero Karl Weierstrass le dio clases privadamente y dirigió su tesis doctoral. Gracias a la intervención de Mittag-Leffler conseguiría una plaza de profesora en...

A simple biography of the man who worked to win fairer treatment of the migrant farm workers in California in the 1960s and to establish the United Farm Workers union.