Todo este tiempo

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...

Explore outer space and learn about stars, galaxies, planets, asteroids and how these bodies are all related to one another. Featured in this book are photographs from outer space and related vocabulary.

Using helpful charts, graphs, informational text in conjunction with vivid images and intriguing facts, this engaging, Spanish-translated title allows early elementary readers to explore the ecosystem, plants, and animals of the deserts around the world.

Este libro es el resultado de la traducción e interpretación de una gran parte de las cuartetas que conforman la alegada obra profética del autor provenzal. El autor nos introduce de forma magistral en un ameno recorrido por los hechos históricos más sobresalientes y curiosos de los últimos 400 años de la Humanidad con un especial énfasis en los acontecimientos que datan desde los inicios de la Segunda Guerra Mundial hasta las llamadas guerras del "choque de civilizaciones" que se han extendido por el Oriente Medio a partir de los trágicos atentados del 11 de septiembre del 2001. En...