Grade 4

From the moon landing to aliens visiting Earth, space is full of mysteries. But some things can be explained with science. Learn about the scientific method and how it can help you discover… More →

From astronaut food and spacesuits to meteor showers and planets with rings, space is full of incredible things. How do we know so much about it? Sometimes you just have to ask why? Lively… More →

Exploring the universe greatly depends on space robots. They go where astronauts cannot go and survive where astronauts cannot survive. Food, water, sleep, and oxygen are not required for… More →

Columbia, Challenger, Discovery, Atlantis, and Endeavor. Though space machines, NASA's shuttles were all named after famous ships. This low-level title fuels reading interest for the most… More →

Out-of-this-world space technology is on display for aspiring astronauts, Star Wars fans, and general knowledge seekers. Every book puts a spotlight on a different type of space machine to… More →

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

From giant anthills and complex beehives to the vast network of underground tunnels and nests dug by prairie dogs, many animals build towns that rival human cities in size and scope. Come… More →

In Speedboats, early fluent readers learn about the science, engineering, and physics that keep these boats afloat. Vibrant, full-color photos and carefully leveled text engage young readers… More →

Just how fast are the fastest vehicles on Earth and in outer space? How do their engines and body designs affect their speeds? Learn about the technology, mechanics, and physics behind the… More →

The spinosaurus was a fierce dinosaur known for the long sail on its back. It could live on both water and land! The high-interest title is a primer for young dinosaur lovers, introducing the More →

In this book, early fluent readers will learn how sponges live and survive in the ocean. Vibrant, full-color photos and carefully leveled text will engage young readers as they learn more… More →

Most days, schools are filled with students learning in classrooms, studying in libraries, and eating in lunchrooms. Yet what about the reports that something more unusual has been spotted in More →