Grade 4

In this book, early fluent readers will learn about the unique strength of ants. Vibrant, full-color photos and carefully leveled text will engage young readers as they learn more about the… More →

In Hindenburg, early fluent readers will learn about the science behind the crash of this monumental airship. Vibrant, full-color photos and carefully leveled text will engage young readers… More →

In Titanic, early fluent readers will learn about the science behind the ill-fated voyage of this “unsinkable” ship. Vibrant, full-color photos and carefully leveled text will engage young… More →

In this book, early fluent readers will learn about the unique abilities of chameleons. Vibrant, full-color photos and carefully leveled text will engage young readers as they learn more… More →

In this book, early fluent readers will learn about the unique indestructibility of cockroaches. Vibrant, full-color photos and carefully leveled text will engage young readers as they learn… More →

In this book, early fluent readers will learn about the unique maneuverability of hummingbirds. Vibrant, full-color photos and carefully leveled text will engage young readers as they learn… More →

In this book, early fluent readers will learn about the powerful strength of rat teeth. Vibrant, full-color photos and carefully leveled text will engage young readers as they learn more… More →

From crossing vast oceans to exploring outer space, we continue to push the limits of our scientific and engineering capabilities. But what happens when our pursuits don't go as planned? What More →

Did you know mound ants can lift 5,000 times their own weight? Or that chameleons can quickly change color? Each book in Nature’s Superheroes highlights a specific animal, discussing the… More →

In Canyons, early fluent readers learn about the geologic process that creates a canyon out of solid rock. Vibrant, full-color photos and carefully leveled text will engage young readers as… More →

In Caves, early fluent readers learn about the geologic processes that create caves, as well as the unique animals and formations inside. Vibrant, full-color photos and carefully leveled text More →

In Mountains, early fluent readers learn about the geologic processes that create mountains around the world. Vibrant, full-color photos and carefully leveled text will engage young readers… More →