The Assessment & Practice (AP) Books are designed to support classroom lessons in the Teacher Resource. They contain curriculum-aligned practice and assessment opportunities. The AP Books are printed in two parts, Part 1 and Part 2. In order to cover the full curriculum, students will need both parts.

1.1 Assessment & practice.Unit 1. Probability and data management : sorting and attributes -- Unit 2. Number sense : counting to 10 -- Unit 3. Patterns and algebra : introduction to patterns -- Unit 4. Number sense : counting strategies -- Unit 5. Measurement : length -- Unit 6. Geometry : 2-D shapes -- Unit 7. Number sense : counting to 100 -- Unit 8. Number sense : introduction to adding and subtracting -- Unit 9. Number sense : number words and story problems. 1.1 Answer key. Unit 1. Probability and data management : sorting and attributes -- Unit 2. Number sense : counting to 10 -- Unit 3. Patterns and algebra : introduction to patterns -- Unit 4. Number sense : counting strategies -- Unit 5. Measurement : length -- Unit 6. Geometry : 2-D shapes -- Unit 7. Number sense : counting to 100 -- Unit 8. Number sense : introduction to adding and subtracting -- Unit 9. Number sense : number words and story problems. 1.2 Assessment & practice. Unit 10. Number sense : introduction to skip counting -- Unit 11. Number sense : money -- Unit 12. Number sense : number lines -- Unit 13. Number sense : addition and subtraction strategies -- Unit 14. Number sense : advanced story problems -- Unit 15. Patterns and algebra : patterns and equality -- Unit 16. Geometry : 3-D shapes -- Unit 17. Measurement : time, area, and capacity -- Unit 18. Probability and data management : collecting data and probability words. 1.2 Answer key. Unit 10. Number sense : introduction to skip counting -- Unit 11. Number sense : money -- Unit 12. Number sense : number lines -- Unit 13. Number sense : addition and subtraction strategies -- Unit 14. Number sense : advanced story problems -- Unit 15. Patterns and algebra : patterns and equality -- Unit 16. Geometry : 3-D shapes -- Unit 17. Measurement : time, area, and capacity -- Unit 18. Probability and data management : collecting data and probability words.