La secreta mision del 6.21

ELECTRICIDAD – Instalaciones eléctricas Diagrame y ejecute proyectos profesionales Presentamos el tercer tomo de la colección Electricidad, que complementa y finaliza el recorrido que iniciamos en Electricidad 1: fundamentos y seguridad, continuamos en Electricidad 2: elementos eléctricos y normalización. Esta última entrega reúne una serie de recomendaciones que es necesario considerar para crear el proyecto de instalación que acompañará un trabajo de electrificación. Por medio de una descripción detallada, abordamos temas tales como la puesta a tierra, las reglamentaciones para ...

The American Civil Rights Movement of the 1950s and 1960s marked a shift in how African Americans were treated in the United States. This volume highlights the important events and figures that made this movement successful. The book introduces readers to important activists who fought for civil rights by raising their voices and refusing to accept unfair laws. Photographs and primary sources provide readers with a firsthand look at the history of the movement. Finally, readers will learn what can still be done to further equality for African Americans in the United States and how they can be ...

People have been using shadow puppets to entertain people for centuries. Learn the history of shadow puppets and the "technology" behind them with this STEAM book that will ignite a curiosity about STEAM topics through real-world examples. Created in collaboration with the Smithsonian Institution, this book features a hands-on STEAM challenge that is perfect for makerspaces and that guides students step-by-step through the engineering design process. Make STEAM career connections with career advice from actual Smithsonian employees working in STEAM fields. Perfect for English language...

In this title, young readers must practice creating patterns with plants in order to maximize space in a small garden in the city, improving their mathematical and STEM skills. Vibrant images, practical examples, and helpful mathematical diagrams and charts engage readers while teaching them how simple it can be to use patterns in their daily life!