Water is the source of life—and of fascinating science! Full of exciting experiments, this workbook brings to life important concepts like water density, the water cycle, and the chemistry of water.

With this set kids can observe clouds to constellations, flowers to photosynthesis. Build a love of the great outdoors and spend time outside as you learn basic concepts of earth science.

Let your voice be heard! This workbook challenges kids to express their opinions. But more importantly, they'll learn how to support opinions with good evidence and facts.

Explore nonfiction with this set of short and sweet facts on notable people, places and events in history. Young readers can practice taking notes, answering questions and analyzing primary sources.

Here's an arsenal of April Fools' Day fodder! Kids will be armed with facts, pranks and puzzles. Plus, they'll be tickled by goofy writing prompts, silly word problems and wacky reading comprehension.

Get your hands dirty in the name of science! Explore the basic elements of the earth's surface with this beginner's guide to rocks, soil, and processes that change them.

Pay homage to our majestic, leafy companions with this series about trees. Kids can learn about the structure of trees, identify different leaf types and reflect on the many gifts that trees give.

Children learn about a variety of aspects of Native American life and culture in this social studies workbook.