Dimension Math 1st Grade Set by Singapore Math. Grade 1 set includes 1. Dimensions Math Textbook 1A 2. Dimensions Math Workbook 1A 3. Dimensions Math Teacher Guide 1 A 4. Dimensions Math Textbook 1B 5. Dimensions Math Workbook 1B 6. Dimensions Math Teacher Guide 1B Condition is like new, other than a school label inside cover. No writing. No pages missing. Minor shelf wear to cover. The Dimensions Math Grade 1 Set with Teacher’s Guides is a comprehensive educational resource designed for first-grade students. From a smoke free, pet free store. Shipped USPS media mail within 1 business day.