Grade 4

Butterflies, chickens, ladybugs, and other animals go through incredible changes in their lives. With its reader-friendly and interactive approach, each book in Incredible Animal Life Cycles… More →

Athletes perform spectacular feats of strength and speed, but sometimes, a player or team rises above the rest to become a legend. From Michael Phelps' gold medals to Tim Howard's saves in… More →

Are hauntings, alien abductions, the Loch Ness monster, and other chilling mysteries really true? Decide for yourself with the help of spooky stories, possible scientific explanations,… More →

Invasive Species presents a high-interest STEM introduction to some of the worldХs most notorious invasive species. Each book highlights the plant's geographical origin, how, why, when, and… More →

Cameras flash as a shiny red car zooms down the road. Airplane passengers close their laptops as they prepare for takeoff. These scenes may be commonplace today, but they are centuries in the More →

What was that? Grab a flashlight, put on your detective hat, and prepare to explore the paranormal! Science and spookiness merge in this thrilling series, which investigates aliens,… More →

All things must come to an end. The clock is ticking, and our final days may be right around the corner! This series explores several scenarios that could lead to the end of life on Earth.… More →

The word is full of wild and wacky careers. Explore some of the coolest jobs on the edge, with fascinating facts, quick qualifications, and some of the grossest, creepiest, and most extreme… More →

What does it take to become a cheerleader? How do cheerleaders learn so many moves, cheers, and routines? This series explores the world of cheerleading, from the first tryout to the thrill… More →

What does the U.S. Coast Guard do? How does the U.S. Marine Corps work with other military branches? U.S. Armed Forces answers these questions and more, while introducing readers to the… More →

Our world is full of majestic landforms, from echoing caverns to lava-spewing volcanoes. This dynamic series teaches young readers about the processes that transform the earth and introduces… More →

LetХs Look at Body Systems! introduces early fluent readers to the bodyХs seven systems with fun and informative storylines. In each book, a fictional child character investigates a specific… More →