by Caroline Eidson, Ph.D.
A major focus during second grade is on the development of fluency with adding and subtracting within 20. This unit provides both a conceptual understanding of addition and subtraction as well as concrete practice with a range of strategies to help your child develop "fact power." She will explore arrays, the Commutative Property of Addition, doubles and near doubles, and fact families and will play a variety of games as she builds her fluency with addition and subtraction facts to 20 and uses those facts to solve problems. To conclude the unit, your child will create an ocean adventure story that incorporates addition and subtraction.
This unit requires the following books:
- Mission Addition by Loreen Leedy
- Subtraction Action by Loreen Leedy