From bridges and streets to houses and skyscrapers, cement is an important material used in many of the structures we use every day. Readers will find out how cement mixers are used to blend, More →
Grade 4
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Learn about the different parts of a combine and find out how these interesting machines are used to harvest crops. More →
Tall cranes tower above construction sites and line the edges of shipping ports. Readers will find out how different types of cranes are used to help build skyscrapers, load cargo ships, and… More →
Almost anything we build requires some sort of digging. Buildings, tunnels, and swimming pools all start with holes in the ground. Readers will find out how different kinds of diggers are… More →
Sometimes a regular pickup truck just isn't strong enough. Luckily, we have dump trucks to handle the heavy loads. Readers will learn how dump trucks are used to haul rocks, trash, and… More →
Fire trucks help to save lives and prevent the spread of dangerous fires every day. Readers will learn where a fire truck gets its water supply, what kind of equipment it contains, and the… More →
Tractors are an essential tool for farmers everywhere. Readers will learn how farmers use tractors to plant and harvest the crops we use every day. They will also find out how people use… More →
Discover how windmills work and how they can be used to create electricity without causing pollution. More →
Young readers will discover what the U.S. president does and learn about the basic building blocks of U.S. democracy. They'll also learn how they play a key role in American democracy. Series More →
Young readers will discover what the U.S. vice president does and learn about the basic building blocks of the United States of America. They'll also learn about how they play a key role in… More →