This kit has been designed to fit the needs of the resource center or library. It's perfect for working with small groups of students with varying degrees of ability. Included are 6 sets each of addition, subtraction, multiplication, division and fractions, for a total of 30 sets. You'll also receive the 4 corresponding Wrap-up Rap CDs as well as our Math Facts teaching manual, a stopwatch, and four of our new 32 page Math Mastery books.