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.

The use of calendars dates back thousands of years. Why are we driven to record time, and what would happen if we did not? Who created the concept of calendars? Why do different cultures use different calendar systems? And why are calendars so important to us? It is about "time" we found out! Created in collaboration with the Smithsonian Institution, this Spanish-translated Smithsonian Informational Text builds reading skills while engaging students' curiosity about STEAM topics through real-world examples. Packed with factoids and informative sidebars, it features a hands-on STEAM challenge...

¿Qué relación hay entre un atraco a mano armada y un crimen nunca resuelto? Descúbrelo en una nueva entrega de la serie de Gotland. Protagonizada por Anders Knutas, Karin Jacobson y Johan Berg, esta trepidante novela policiaca se adentra en los traumas de la infancia y en cómo su sombra puede alcanzar el futuro.Una mañana de finales de verano tres encapuchados atracan un banco a mano armada en pleno centro de Klintehamn, una pequeña localidad en la costa oeste de la isla de Gotland. En su huida en un coche robado, los ladrones atropellan a una niña de seis años. Cuando la Policía da ...

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!

You re growing up and your body is changing. If you re a girl, you re likely experiencing the start of menstruation, your breasts are making themselves known, and you re noticing new hair that you might want to be rid of. If you re a boy, you may be experiencing something strange as you sleep, or sweating a lot and not wanting to shower. This book is a complete guide to the terrible and marvelous world of puberty."