La Energía Solar (Solar Energy)

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.

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.

"En este libro te proponemos un recorrido que no te va a dejar indiferente. Porque no el sólo un itinerario por distintos países del mundo, sino que te invita a adentrarte en la escencia del ser humano...,"--Page [4] of cover.

Introduce young readers to three-dimensional shapes with this exciting title! This Spanish-translated book follows the story of a contest to design a new playground. Challenge children to understand the concept of three-dimensional shapes, teaching them useful terms like dimension, height, width, face, base, and vertex. Young readers will use STEM skills to learn how to recognize new three-dimensional shapes like cubes, cylinders, and pyramids all around the playground! Let these vibrant images, clear examples, and helpful mathematical diagrams make geometry easy and fun!

Aprende todo sobre las serpientes en este emocionante libro para niños. Está lleno de imágenes bellas e interesantes que les enseñan a los niños todo sobre estos animales asombrosos. Este libro de Nivel 2 es apropiado para los primeros pasos de lectura independiente o para una experiencia de lectura en voz alta, ¡perfecto para motivar a futuros científicos y exploradores!

"Uses simple text and photographs to describe how to make and use pictographs--in both English and Spanish"--