12 books • 5 series
Book #4: TinkerActive Workbooks: Kindergarten Science
Book #6: TinkerActive Workbooks: 2nd Grade Science
Book #7: TinkerActive Workbooks: Kindergarten English Language Arts
Book #9: TinkerActive Workbooks: 2nd Grade English Language Arts
Book #11: TinkerActive Workbooks: Pre-K Science