El ferrocarril transcontinental (The Transcontinental Railroad)

Readers won't have to disassemble their favorite toys to discover what makes them work. This book explores electric, magnetic, and motion-powered toys from design to function. It introduces readers to the six simple machines and explains how they use force and motion to do work. Not every toy is a technological marvel. Readers learn about time-honored favorites including the rocking horse, Slinky, and rattles.

Book Features: • Ages 4-8, Grades PreK-2 • 16 pages, 8 inches x 8 inches • Simple, patterned Spanish text with full-color pictures • Includes comprehension questions, writing prompts, and high frequency words • Graphic organizers and photo glossary included Dive Into Learning: In Listos para las Ciencias: Puedo Nadar, preschoolers—second graders learn about the different types of animals that can swim, just like you! Science Made Fun: Do you know how to swim? These animals can swim, too! Young readers learn about some of their favorite animals that can swim and even live in the...

SPANISH EDITION. This book can help you begin again with a clean slate if you have lived a “disorganized” life. It will help you how to maintain your purity. It answers questions like: “What does it mean to go too far?”; “Can God forgive me if I have lived a disorganized life?”; “What should I do from here on out?” and many others.

This Title Explains What An Ecosystem Is And How The Plants And Animals Within An Ecosystem Rely On And Effect Its Existence. Different Types Of Ecosystems Are Described, As Well As The Food Webs Within Them. How Some Changes To An Ecosystem Can Be Good And How Some Harmful Changes Can Destroy Them. Teaches Students What An Important Role They Can Play In Keeping These Intricate Ecosystems Alive.