La llegada de los dioses

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...

"Este libro gigante con paginas desplegables y atractivas fotografias hara que tu hijo desarrolle su destreza manual y aprenda sobre todo tipo de maquinas"--From publisher's description.

Esta obra es el resultado, principalmente, de los apuntes de Televisión utilizados en los cursos desde hace años han venido siendo actualizados de manera prácticamente constante. El material de la obra abarca los aspectos básicos relativos a los sistemas tanto analógicos como digitales.

As the COVID-19 pandemic has spread around the world, it's left many adults and children searching for answers about how they can stay safe. By focusing on facts presented in a relatable way rather than fear, this illustrated guide to health and safety gives children the tools they need to understand what's happening in the world and to discover how they can become a virus warrior. Facts about coronaviruses are paired with essential information about social distancing, personal hygiene, and the things we can control in uncertain times, creating a learning experience designed to reduce...