Los Artículos de la Confederación (Articles of Confederation)

The idea of the Roaring '20s conjures up images of speakeasies, women with short, saucy hairdos, and hot jazz. Readers will learn about the historical events that define this decade, including the devastating war that preceded it. An explanation about project-based learning will help readers understand how it can help them research their topic in unique and interesting ways. Constructive suggestions offer ideas for projects, while encouraging readers to take their studies in new and interesting directions.

Defines pulleys, explains their functions, and suggests simple experiments to demonstrate how they work.

Black holes are neither holes nor black. They're invisible and packed with matter! Future astronomers will find out many more fascinating facts about these space phenomena with this intriguing book. Carefully crafted text encapsulates the most important information about black holes, such as how scientists locate them and their significance in a star's life cycle. Amazing photographs support critical concepts and inspire a true appreciation of the spectacles of space.

Tener la regla mola... Pero hay que saber cómo funciona. ¿Qué es la menstruación?,¿cómo te transforma el ciclo menstrual?, ¿la regla duele?, ¿qué opciones tienes para no mancharte?, ¿la primera regla llega de repente? Todo lo que siempre has querido saber sobre la menstruación (y nunca te has atrevido a preguntar) explicado de forma directa y divertida para vivir estos cambios con confianza y bienestar. Porque tener la regla mola, pero hay que saber cómo funciona.

With Análisis de mapas, the Spanish-translation of the Grade 4 nonfiction text, Looking at Maps, students will learn all about maps! This engaging informational text introduces readers to map symbols, keys, map ratios, grid coordinates, and more! This engaging informational reader comes with clear mathematical charts and diagrams, easy-to-read text, and opportunities to practice reading maps with ease!