Las cadenas alimentarias en el desierto (Desert Food Chains)

Este libro contiene 90 entrena-mentes, actividades diseñadas para mejorar el funcionamiento de tu cerebro: ejercicios de memoria, juegos de palabras, problemas numéricos, retos visuales, códigos secretos, variantes divertidas del sudoku...

Landsat satellites orbit the Earth to get images. Learn how these images are made using heat. Then, find out how these cutting-edge satellites are helping save the planet! 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 engineering innovations that solve...

El niño Jesús se ha perdido, no está en el nacimiento la noche de Reyes. Una niña se da cuenta y sale a buscarlo entre ruinas y escombros. Una historia que mira hacia la destrucción que provoca la guerra desde el punto de vista de la esperanza que aportan

The need for speed is the motivating factor in this engaging, Spanish book. Readers learn the history of travel from the very slow to the supersonic and beyond, including everything in between. They learn and discover the factors that influence motion for all types of vehicles: land, air, and water alike. They also learn different ways to measure speed and read about energy uses for different vehicles. With greater speed comes greater risk. Readers learn how engineers are always seeking new and better ways to keep people safe as they travel faster and go farther. This 6-Pack includes six...