12 books
Maps for U.S. History, Grades 5 - 8
U.S. History Puzzles, Book 2, Grades 5 - 8
U.S. States and Territories Maps, Grades 5 - 8
U.S. History Puzzles, Grades 4 - 8
Math Challenges for the Critical Thinker, Grades 5 - 8
Basic Geometry, Grades 6 - 8
World Geography Puzzles, Grades 6 - 12
Life Skills, Grades 5 - 8
Easy Science Experiments, Grades 4 - 8
Mathematics Puzzles, Grades 4 - 8
Basic Geometry, Grades 5 - 8
150+ Easy Science Experiments, Grades 5 - 8