Grades 2 - 5

Did you know that sliding down a slide relies on both friction and gravity? Or that trampolines operate in accordance with Newton's laws? This series uses simple language, clear explanations, More →

From spines to stink and from armor to electricity, animals have many ways of saying, "Back off!" These books introduce young readers to some of the unique protective adaptations animals… More →

Whether in the ocean, on the prairie, or in the rain forest, it's eat or be eaten. This fascinating series explores the many links in a biome's food chain, introducing readers to producers,… More →

Did you know there is a whale as long as two school buses? Or a bird that's so heavy it can't even fly? Kids will enjoy exploring the world of supersized animals in this exciting series.… More →

Nature has the ability to turn our world into a disaster zone. From blizzards to volcanoes, this series looks at the science behind the destruction. How is a blizzard different from a… More →

From skyscrapers up above to tunnels down below, the structures people build are amazing. How are they built? And why? Amazing Structures uses carefully leveled text and vibrant, full-color… More →

How does your garden grow? Very well, with this helpful series! Engaging leveled text and vibrant photographs encourage young readers to plant, grow, and harvest their own flowers, fruits,… More →