Grade 4

Hidden in murky water, a fierce predator patiently waits for its next meal. A buffalo that gets too close to the water's edge is no match for the strong jaws of the hungry saltwater… More →

Many fierce predators lurk just below the ocean's surface. Saltwater crocodiles use their strong jaw and huge teeth to latch on tight. But there's no escape once a hammerhead shark has pinned More →

In Salty Snacks, early fluent readers will learn how, when, and where some of their favorite salty snacks, such as popcorn and potato chips, were invented. Current and historical photographs… More →

Sammy is so clumsy that everybody calls her a silly hot dog. Soon, Sammy doesn't want to be a silly hot dog anymore! The phonemes /o_e/u_e/ are featured in this title. More →

Beaches are full of small, grainy rocks called sand. They are made of different kinds of rocks, minerals, and even shells! But how did all that sand get there? Learn all about rockin' sand,… More →

When Mauro Prosperi set out on an ultramarathon through the desert, he didn't realize he would soon enter a race for his life. After a sandstorm sent Mauro off course, he had to do whatever… More →

In this title, early fluent readers meet Sasha, a girl who loves to play soccer, as she learns about her skeletal system. Read along as Sasha and her dad discuss how bones, joints, ligaments, More →

In this book, early fluent readers will learn about Saturn's unique characteristics. Vivid, full-color photos and carefully leveled text engage young readers as they learn more about the… More →

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In Savanna Food Chains, early fluent readers explore the savanna biome and the food chains it supports. Vibrant, full-color photos and carefully leveled text engage young readers as they… More →

In these true tales of wildlife survival, readers discover how some of America's most beautiful and fascinating animals came face-to-face with the threat of extinction. Yet through the heroic More →

Brothers John and Frank Craighill knew there was a problem when they saw fewer and fewer grizzly bears at Yellowstone National Park. But how did grizzlies--with a population size once as big… More →