10 ríos que transformaron el mundo

¿Sabías que a lo largo de la historia han muerto más personas a causa de las epidemias que por culpa de las guerras y otros desastres? Algunos científicos, a veces arriesgando sus vidas, investigaron las causas de enfermedades como la peste, el cólera, el sida o el ébola. Muchos de ellos fueron objeto de burla, fueron ignorados, e incluso los despidieron de sus trabajos. Sin embargo siguieron intentando encajar las piezas del puzle de las epidemias. Y la primera pieza, la más importante, era el «paciente cero», la primera persona que hubiera contraído la enfermedad, porque así...

Amphibians can be found all over the world. There are more than 7,500 kinds of amphibians living in streams, rainforests, deserts, and everywhere in between. Many of them are in danger due to a deadly fungus, but help is on the way! 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 ...

Describes the life and work of the scientist who was persecuted by the Inquisition for his views of the universe.

The scientific method lists important steps in the process of conducting scientific study and research. With detailed images and fascinating sidebars, this nonfiction book explores the scientific method and scientific practices in depth, and introduces students to new concepts, vocabulary terms, and STEM topics. Aligned to state and national standards, the leveled text supports students reading at above-, below-, and on-grade level. The fun lab activity encourages students to think like scientists. Keep students engaged in learning with this Spanish book.

A family can be made in different ways. Families are all made from love. Let’s learn how a family can be made. Paired to the fiction title The Family Photo.