¿Cuáles son las ramas de la democracia?

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...

Bestseller del New York Times y del USAToday Una exploración oportuna y crucial del racismo y el antirracismo en Estados Unidos Este NO es un libro de historia. Este es un libro sobre el aquí y el ahora. Un libro que nos ayudará a comprender mejor por qué estamos donde estamos. Un libro sobre la raza. El concepto de raza siempre se ha utilizado para ganar y mantener el poder, para crear dinámicas que separan y silencian. Esta notable adaptación del libro Stamped from the Beginning, del Dr. Ibram X. Kendi, ganador del National Book Award, revela la historia de las ideas racistas en...

This award-winning beginner's guide to the natural world of fish from the creators of the About... series was named an "NSTA Recommends" book. Noted educator and author Cathryn Sill uses simple, easy-to-understand language to teach children the basic characteristics of what fish are, how they swim, breathe, and reproduce, and explains the different ways they protect themselves from predators. With beautifully detailed, realistic paintings, noted wildlife illustrator John Sill introduces readers to the diversity of the fish population, from an Arctic char to a porcupine fish. An afterword...

In this Spanish title, learn causes of extinction and what problems extinction causes for animals, wildlife, and humans alike.