Mind-blowing Math! Build higher-level thinking and processing skills with fun puzzles and problems. Students will learn to create their own problems, which they can then share with classmates. Some of the concepts introduced, explored, and shared include matrix logic, sequencing, probability, place value, and geometry, as well as the basics such as addition, subtraction, multiplication, division, fractions, and money. Included in each book is a review test and an answer key