Grades 3 - 7

Levers are simple machines that make work easier. There are three different classes of levers. Students will learn what levers are, how the classes of levers differ, and how the construction… More →

High speeds, superior handling, and sleek design are all features of super cars. Readers will learn about the history and technology of these extreme sports cars as well as how they are… More →

Wedges are simple machines used to split, lift, or hold an object in place. Children will discover how wedges perform jobs for people and how they make everyday life easier. More →

High-performance engines make these boats capable of incredible speeds. Young readers will learn how powerboats are designed to reduce wind resistance in their goal of reaching the fastest… More →

Ramps are simple machines used for work and play. Workers use them for easy loading and unloading. Skateboarders use them to do tricks. Readers will learn how ramps make work easier and how… More →

Pulleys are simple machines used to lift and move loads. Builders use pulley systems to lift tools or materials. Elevators use pulleys to move up and down. Kids will learn how pulleys make… More →

We use wheels and axles several times every day. Young readers will learn how a wheel and axle work together, how they make work easier, and how they are used in larger, complex machines. More →

Screws are simple machines used for many different jobs. The concept of a screw is used in snow blowers, drills, and presses. Kids will learn how screws work and how they are used in complex machines. More →

How does blood move around inside the human body? Students will learn all about the heart, blood cells, blood vessels, and other important parts of the circulatory system. More →

The nervous system is a complex network of nerves that allows you to experience the world around you. Children will find out how nerves carry messages to the brain so that people can do… More →

As soon as food touches your tongue, it begins a long process of moving through different parts of your body. This book explains how the human body breaks down food to get nutrients and stay healthy. More →

Muscles help us lift, push, pull, and move. Eager readers will explore the different kinds of muscles, how their muscles work, and how to take care of them. More →