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.

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

¡Tener un hermano o una hermana es fantástico! Menos cuando nos peleamos. De eso trata este cuento. Un álbum ilustrado que nos cuenta con afecto y humor los conflictos, los sentimientos y las aventuras del día a día entre hermanos. Para ayudar a los niños y las niñas a darse cuenta de que tener un hermano o una hermana ¡es muy divertido! It's wonderful to have a brother or sister . . . except for the fighting. And that's what this book is all about. This illustrated volume talks about conflicts between siblings, and it does so with humor and affection. Having a sibling involves daily...

¡Hay nieve en el suelo, y los carámbanos se están formando! Debe ser invierno. A través de fotografías de color descubra qué tipo de actividades la gente hace en el invierno. Las preguntas de pensamiento crítico y otras grandes características hacen que esta edición en español sea una excelente introducción a la lectura de no ficción para niños. There's snow on the ground, and icicles are forming! It must be winter. Through vivid full-color photographs and carefully leveled text, discover what kinds of activities people do in the winter. Age-appropriate critical thinking...

A dictionary tailored for the Latin American market is an ideal supplement to the middle school curriculum and includes up-to-date definitions, example sentences, synonyms and antonyms, and more. Original.

For young people, it can be easy to confuse what one wants as opposed to what one actually needs. This thoughtful resource elucidates the basic concepts of wants and needs and how they fit into the economic landscape. Readers will be asked to consider the different priorities of cultures from around the world, offering a more global overview, as well as a perspective on what people needed in the past. The text nudges the idea of needs further with a discussion of emotional needs and what those might be.