Count and convert measurements for liquids, lengths and time with this supplemental book! So many practical skills come from knowing how to measure lengths, tell time and convert units of measurement.

This book orbits all sorts of outer space objects. Introduce kids to bits of space with this easy-to-read series that goes from Earth to nebula in light speed!

Get acquainted with the original GPS...maps! This geography workbook goes over all the fundamentals of finding your way, from cardinal directions to map scale, landforms and more.

These supplemental sheets take Colonial American history for a spin. Imaginative writing prompts and fact sheets for historic figures can be a fun complement to research projects.

Set sail for adventure with this book that offers an exercise in geography and essential nonfiction reading skills. Each page contains information and a fact-finding activity, with quizzes at the end.

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.

Rising sixth graders will review what they learned in fifth grade, plus brush up on math and literacy skills, with this engaging workbook.

Oh no super heroes and villains on the loose! Only your child's writing skills can solve the mystery and save the day. Perfect for extremely imaginative kids, this workbook keeps thinking on its toes.