4th Grade

Readers will be amazed to discover that every time they climb onto bicycles and ride like the wind, they are defying gravity! This book explains the physics and history behind bicycles, skateboards,...

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...

This book will be a hit with both thrill seekers and with those who prefer to stay safely on the ground. After an introduction to Newton's three laws of motion, readers learn the mechanics of various...

Ice cream is a solid. But when it melts, it becomes a liquid. Solids can change to liquids and back again by melting and freezing. Read this Spanish-translated book to learn what happens when heat and...

Hooray for your brain! Without it, you could not read these words right now! But where is your brain exactly, and what does it do? Use your brain to read this book and learn all about...

There is an amazing muscle inside you. It pumps blood and keeps you healthy. What is it? Your heart! Read all about it in this book. GRADE LEVEL: 2-4 PAGES: 32 GUIDED READING LEVEL:...

Readers may never expect that they might free fall to Earth, but if they have ever dived into a pool, that's exactly what they've done. This book shows readers how Newton's three laws of motion affect...

The need for speed is the motivating factor in this engaging book. Readers learn the history of travel from the very slow to the supersonic and beyond, including everything in between. They learn and...

True or False: The only reason to play sports is to have fun. False! They also offer opportunities for readers to learn and apply concepts and principles related to force and motion. Readers learn how...

How does a gas change to a liquid? Through condensation! Condensation is the liquid that appears on your bathroom mirror after a hot shower. It is the big gray clouds in the sky just before a rain. In...

How does a liquid become a gas? Through evaporation! Evaporation helps make puddles disappear after it rains. In this Spanish-translated book, learn all about evaporation and how it happens...

A pond may seem quiet and subdued, but this unique ecosystem is filled with active life cycles. Students learn what distinguishes a pond from other bodies of water, the plant and animal life within...