Trayectoria de choque: Los asteroides y la Tierra (Collision Course: Asteroids and Earth)

You've only got one day to spend at the carnival-how do you make the most of your time? Students will learn how to measure time while reading about a fun-filled day at a carnival! This fiction Spanish book uses real-world examples to teach math concepts, and incorporates nonfiction reading to increase vocabulary and comprehension skills. The challenging practice problems, graphs, and sidebars provide many opportunities for students to practice their developing math skills, and apply what they've learned to their daily lives. Essential text features like a glossary, index, and table of...

Expanding on our popular Let’s Explore Science series, this book focuses on the scientific method. The scientific method is a step-by-step process for solving science problems. Scientists use it every day. Explaining each of the five parts; observing and asking questions, researching your topic, forming a hypothesis and testing it, designing and conducting an experiment, and analyzing and drawing conclusions from your result are all mapped out in detail. Learn how this straightforward topic can sometimes be a little trickier than it seems! This book will allow students to generate and...

¿Quién dijo que las mujeres no eran exploradoras? Todos conocemos el nombre de algún pirata famoso, o de un astronauta que haya llegado al espacio, pero...¿y las mujeres? Muchas lo petaron en sus viajes o inventaron máquinas con las que alcanzaron nuevos hitos. Aquí podrás encontrar a 25 superaventureras que cambiaron el mundo y demostraron su poder. Muchas de ellas han tenido un papel decisivo en nuestra historia y nunca lo hemos sabido, pero ahora ha llegado el momento de homenajearlas y decir en voz alta que¡las chicas van donde quieren! ENGLISH DESCRIPTION Whoever said that women...

The United States grew rapidly from the time of the Louisiana Purchase to the building of the Transcontinental Railroad. All of this expansion came at the expense of Native American populations that had either lived in the region for centuries or been forced there from ancestral homes in the East. Tribes memorably fought on their own and together in an doomed effort to retain the land and a lifestyle that had long sustained their families. This book outlines some of the major conflicts of the Westward Expansion, and of the treaties and were signed, and often broken, by representatives of the...