¿Por qué hibernan los animales? (Why Animals Hibernate)

After several military accomplishments, Mirabeau B. Lamar entered the world of Texas politics. Elected president in 1838, Lamar faced a host of problems with mixed success. His advocacy for education laid the framework for public education in Texas.

For thousands of years, militaries around the world were limited to male soldiers. However, throughout history, brave women have stepped out of the background and onto the battlefield. This biographical text covers the important women who’ve broken ground in the military. Famous historical figures such as Joan of Arc, Clara Barton, and Florence Nightingale are covered in depth, while the stories of modern-day heroes are presented to show how women are still affecting change on the front lines. A comprehensive timeline, fact boxes, and historical and modern images complete this...

Como bien sabes, es común que todos nos relacionemos de una manera u otra; igual pasa con las ciencias que explican el mundo en el que vivimos, son como una gran familia. La Ciencia, en general, es como la abuelita; Matemáticas es la madre, trata de explicar cómo se formó el Universo con ayuda de sus hijas: Astronomía, la mayor; Geología, la que sigue; Biología, la hija sándwich, y las gemelas Física y Química, que no por ser las más pequeñas, son las menos importantes. Cuando la hermanas juegan entre ellas, crean otras ciencias interesantes en las que participan figuras de...

From the candiru to the lionfish, there are so many kinds of fish on Earth. While all have different methods of production, the basic life cycle is the same, from egg to spawning swimmers. Readers are introduced to this general cycle as well as the important vocabulary needed to talk about it, such as “fry” and “spawning.” Accessible language and simple diagrams throughout the book provide a way for struggling readers to tackle science curriculum content.