Rastreo del tiempo (Tracking the Weather)

Over the years, people have looked for ways to improve our imperfect sight. This has led us to the world of optics, which is the study of light and how it travels. What are some of these innovations that have changed how we see the world, and how do they work? Find the answers to these questions with this Smithsonian Informational Text! Created in collaboration with the Smithsonian Institution, this text builds students' reading skills while engaging their curiosity about STEAM topics through real-world examples. It features a hands-on STEAM challenge that guides students through every step...

What do churros, macarons, and strudel have in common? In order to bake them successfully, pastry chefs must use fractions! Students will learn comparing fractions while engaged in reading about delectable desserts from around the world. This Spanish book combines mathematics and literacy skills, and uses practical, real-world examples of problem solving to teach math and language arts content. The glossary, index, and table of contents will further understanding of reading and math concepts, and the full-color images, practice problems, and math graphs and charts make learning math easy,...

Learn how to help others in your community. This exciting Spanish nonfiction book describes the many ways that volunteers make a difference, from cleaning up parks to helping in food banks. Perfect for young readers, the book includes a short fiction stor

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

He planeando que en el mundo de hoy nos hemos embarcado en una carrera loca hacia ninguna parte,en una ciencia inducida para arrebatarnos el derecho a pensar.El resultado es evidente.Nos hemos transfigurado en seres simples.En la simplicidad descansa nuestro sometimiento. Es una estrategia tan perversa, tan inteligente, que ha logrado que los sometidos pensemos que somos libres. Es una conspiración que nos impulsan a decir solo lo que esta"bien" lo que todo el mundo acepta y cree, no te puedes salir de la fila, nos han obligado a rechazar lo intrincado, lo complejo lo que te exige la...

When President Thomas Jefferson bought the Louisiana Territory from cash-strapped France in 1803, he doubled the size of the United States without really knowing what he was getting. He dispatched Meriwether Lewis and William Clark and their Corps of Discovery to explore a territory that would include part or all of fifteen future states and to seek a water route to the West Coast. Westward expansion began immediately, all for the bargain price of 15 million dollars. This book richly explores this fascinating part of history.

El profesor Eleazar Barajas es hijo mayor del Señor Alejandro Barajas Santoyo. Nació el 2 de junio de 1952 en Lombardía, Michoacán, México, Sus padres se divorciaron cuando tenía cinco años de edad y por esa causa, juntamente con su hermano menor, Israel Barajas, fueron puestos por su padre en el Internado de nombre Casa Hogar “El Buen Pastor” en la ciudad de Morelia, Michoacán, México. Cuando cumplió sus diecisiete años de vida, decidió estudiar en el Seminario y comenzó su carrera ministerial en el Instituto Bíblico de Puebla (Estado de Puebla, México) donde estudió por...