The Corps of Discovery kept journals on their two-year-long journey. This workbook challenges kids to flex their spelling and grammar skills while reading about the trip in the words of the men.

Scale math heights using this workbook that's based on real measurements of U.S. geography. Kids rely on charts and data provided to answer word problems.

Learn the lay of the land with a comprehensive breakdown of Earth's landforms. From buttes to fjords, kids will learn all the terminology and science behind the amazing structures of our planet.