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.

La novela de un país que despierta. Una mujer de la alta sociedad, muy bella y muy desgraciada. Un publicitario embarcado en un programa radiofónico que busca a personas desaparecidas. Un magnate con buenos contactos políticos dispuesto a consolidar su imperio. Un joven del Norte que rastrea sus orígenes. En la Barcelona de 1960, las trayectorias de todos ellos se cruzan iluminando ambientes contrapuestos. Estaba en el aire es una historia de sentimientos y búsqueda personal, de periodismo e intrigas empresariales, que transcurre en un momento histórico poco abordado por la narrativa...

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...

Esta obra pretende desarrollar la comprension estrategica del jugador y asi permitirle mejores resultados.

Bacteria have a slimy reputation. They're too small to see with the human eye, so it's easy to let them slip past unnoticed. But, bacteria are part of our daily lives. In fact, they affect everything from milk to our moods. Get ready to zoom in on the hidden world of bacteria and explore the many ways that bacteria are being used in the modern world. This nonfiction reader seamlessly integrates the teaching of math and reading, and uses real-world examples to teach multiplication of mixed numbers. Text features include images, a glossary, an index, captions, and a table of contents to build...