This Pre-K Books Set includes 5 Books: 1. Explode the Code, Book A (2nd Edition) 9780838878194 2. Explode the Code, Book B (2nd Edition) 9780838878200 3. Explode the Code, Book C (2nd Edition) 9780838878217 4. Explode The Code Teacher's Guide for Books A,B,C 9780838878224 5. Explode The Code Picture Cards with Letters, Set of 60 9780838878231This Pre-K Books Set includes 5 Books: 1. Explode the Code, Book A (2nd Edition) 9780838878194 2. Explode the Code, Book B (2nd Edition) 9780838878200 3. Explode the Code, Book C (2nd Edition) 9780838878217 4. Explode The Code Teacher's Guide for Books A,B,C 9780838878224 5. Explode The Code Picture Cards with Letters, Set of 60 9780838878231