Cómo funcionan los ecosistemas

From war and death to school and gender equality, the Sociedad series discusses many serious issues in a way that can be easily understood by children. Although many of the situations and examples are specific to Mexico, these books can be applied to a general readership, particularly one of Hispanic origin. Reflecting on modern sciences, particularly biotechnology—from its limitations to its advances—this perceptive study answers many questions concerning cloning and genetically modified organisms, such as Why do scientists work in these arenas? What are the benefits of this technology?...

There are many steps in the nitrogen cycle that include difficult concepts and words: denitrification, prokaryotes, ammonia, and more. With the help of this understandable book, even struggling readers will grasp this cycle of nature. Low-level language, fact boxes, and an extended glossary provide readers with essential vocabulary explanations that allow them to further understand each step of the cycle. Full-color diagrams aid readers' comprehension as they move through the cycle from start to finish, and then around again.

Our closest solar system is about 10 light years away. It has two main types of planets. Some are rocky and small, like planet Earth, while others are huge balls of gas, like Jupiter. Learn about how astronomers once thought our solar system was the one and only, to how they have now discovered hundreds of stars with planets orbiting them, which means there could be billions of solar systems in outer space! Just maybe, these alien worlds could host life, like our own amazing planet. This book allows students to use observations of the Sun, moon, and stars to describe patterns that can be...

La publicación del primer volumen de esta serie sacudió al mundo y les mostró a las Niñas Rebeldes de todo el planeta que no hay fronteras ni límites para que cumplan sus sueños y sean lo que quieran ser. Y, para que siga la rebeldía, hemos preparado para ellas esta edición con la historia de cien colombianas y ecuatorianas extraordinarias. Junto con un grupo de talentosas ilustradoras, investigadoras y escritoras recolectamos las historias de mujeres de Colombia y Ecuador, de todas las épocas y profesiones, para rendir homenaje al gran legado de rebeldes que ha levantado la voz para ...