La Energía Solar (Solar Energy)

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.

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

Ofrece una explicación de las soluciones y mezclas y en qué se diferencian, así como ejemplos de mezclas y soluciones.

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...

Cecilia es la única persona que visita a Silvio, un hombre que guarda celosamente el misterio de una vida de leyenda que nunca ha querido compartir con nadie. A través de una caja con fotografías, Silvio va dando a conocer a Cecilia su fascinante historia junto a Zachary West, un extravagante norteamericano cuya llegada a Ribanova cambió el destino de quienes trataron con él.

Este libro tiene 40 páginas para colorear sin estrés, para reducir la frustración y mejorar la confianza. Este libro ayudará a los niños muy pequeños a desarrollar el control del lápiz y ejercitar sus habilidades motoras finas