Standard: CC.2.2.1.A.1 , CC.2.2.1.A.2
Represent and solve problems involving addition and subtraction within 20.
Understand and apply properties of operations and the relationship between addition and subtraction.
I can...
subtract within 20.
LEARNING SCALE
With help, the student demonstrates partial success at 2.0 and 3.0.
I can understand subtraction as an unknown-addend problem.
Vocabulary: fact family
I can:
Understand subtraction as an unknown-addend problem. For example, I can find the number that makes 10 when added to 8, to solve 10 – 8.
Apply properties of operations as strategies to add and subtract (commutative property of addition; associative property of addition).
SUPPORTING RESOURCES