Grade 4

Archaeopteryx first lived around 150 million years ago. This flying dinosaur is related to today's birds! Eye-catching illustrations and engaging hi/lo text draw readers into this title about More →

The Archelon was the biggest sea turtle that has ever lived! In this hi/lo title, readers will learn about the ancient turtle's body parts, favorite foods, common behaviors, and more through… More →

In the Arctic, winter lasts eight months and temperatures fall as low as -58ºF. Few animals can survive such extreme conditions. The Arctic fox, however, is unique. It lives farther north… More →

Arctic foxes stay warm in their chilly homes thanks to their small bodies and fluffy white fur. They blend in with the white winter landscape as they hunt for their next meal. Once they smell More →

Fierce battles take place in the Arctic. Both Arctic foxes and snowy owls are sneaky predators. What would happen if these two were to clash? In this hi-lo title, reluctant readers will learn More →

In this book, early fluent readers will learn about the unique features, characteristics, and wildlife of the Arctic Ocean. Vivid, full-color photos and carefully leveled text engage young… More →

In this book, early fluent readers will learn about famous shipwrecks in the Arctic Ocean, including HMS Erebus, HMS Terror, and SS Terra Nova. Learn when, where, and how the ships sank, when More →

Arctic wolves and polar bears are top predators. When they meet on the tundra, there will be a clash of claws! This hi/lo title explores the fighting strengths of each of these fierce animals More →

What goes on inside Area 51? In Area 51, early fluent readers will learn about this mysterious government site in Nevada, including details of nearby UFO sightings and the spy planes created… More →

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

Boom! Footsteps echo through the forest. Here comes an Argentinosaurus! In this high-interest text, readers will explore the life of this enormous dinosaur, from what it ate and where it… More →

It sniffs with a snout pressed close to the ground, smelling for a tasty treat. After a quick scratch of the ground with sharp claws, the armadillo's tongue does the rest of the work to… More →