La historia de los sistemas numéricos: Valor posicional (The History of Number Systems: Place Value)

Weather is an important science concept at the early elementary level. Recognizing and identifying kinds of weather requires observational skills and certain vocabulary terms. This bright volume allows young meteorologists to correlate weather in carefully selected photographs with descriptive weather vocabulary, such as rainy, sunny, and foggy. It's never too early to tackle this essential STEM theme!

Do you know the important skills it takes to survive in the jungle? Learn about them in this useful, Spanish-translated nonfiction title. With helpful diagrams, vital tips and instructions, vivid images, and a glossary of useful terms, this title will have readers feeling aware and prepared!

Earthquakes can leave people and property in bad shape. At times, they can be deadly. Find out about the science of studying earthquakes and the men and women who track the movements of the ground below us. Created in collaboration with the Smithsonian Institution, this Spanish book ignites a curiosity about STEAM topics through real-world examples. It features a hands-on STEAM challenge that guides English language learners through every step of the engineering design process. Inspire students to pursue a STEAM career with career advice from a real person working in a STEAM field. Discover...

Un día el hombre creó, a partir de piedras y palos, su primera herramienta, y desde ese día comenzó a transformar el mundo con su trabajo. Lo que primero fue piedra más tarde sería martillo, así como las cavernas se convirtieron en rascacielos. La historia es una lección de humildad. Los hombres y mujeres que aprendieron del pasado y pudieron soñar y construir un futuro mejor fueron aquellos que no se vivieron como individuos aislados, sino formando parte de una gran tarea colectiva: la aventura de la humanidad.