El ferrocarril transcontinental (The Transcontinental Railroad)

Learn how scientists channel energy from the sun to power awesome innovations! Created in collaboration with the Smithsonian Institution, this STEAM book will ignite a curiosity about STEAM topics through real-world examples. It 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 learners, this Spanish book builds 1st grade students’ early literacy skills.

What is work? You may think work is doing chores or going to a job, but you do work every time you move something from one place to another. With experiments that demonstrate these fundamental concepts, discover how you work, and how simple machines make doing work easier.

This book introduces children to fascinating figures throughout history. They include Ramses II, Moctezuma, Nostradamus, Albert Einstein, and Stephen Hawking.

Veinticinco relatos cortos para revisitar de forma amena y divertida la historia universal. Descubre 25 emocionantes y divertidos relatos con los que te transportarás a los acontecimientos más importantes de la Historia Universal, desde el Paleolítico hasta la Edad Contemporánea. Empieza un emocionante viaje a través del tiempo. ¡No te lo pierdas! ENGLISH DESCRIPTION Twenty-five short tales to review world history in a fun and entertaining way. Discover 25 fun, exciting tales that will transport you to the most important events in world history, from the Paleolithic period to the modern ...