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.

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.