Memorization

Unit 16: Real-life text problems

Unit 15: Text problems using addition and subtraction

Unit 14: Negative snake

Unit 13: Introduction of subtraction – subtraction as the opposite of addition

Unit 12: Positive snake

Unit 11: Additions with summands greater than 10

Unit 10: Dissociative property

Unit 9: Associative property

Unit 8: Commutative property

Unit 7: Dynamic additions with two-figure summands