Clarifications:
Essential Understandings
Concrete:
- Make a set with objects from a given addition or subtraction equation.
- Join or separate objects and count to determine how many were ‘added to’ the set (Ex: 8 + ? = 10) ‘taken from’ the set (Ex: 3 - ? = 1), or the sum or difference (Ex: 6 + 6 = ?).
- Make a set with visuals from a given addition or subtraction equation.
- Join or separate visuals and count to determine how many were ‘added to’ the set, ‘taken from’ the set.
- Understand the concepts, symbols, and vocabulary of +, - and =.
| Number: MAFS.2.OA.1.AP.aa | Category: Access Points |
| Date Adopted or Revised: 06/14 |
Cluster:
Represent and solve problems involving addition and subtraction. (Major Cluster) : Clusters should not be sorted from Major to Supporting and then taught in that order. To do so would strip the coherence of the mathematical ideas and miss the opportunity to enhance the major work of the grade with the supporting clusters. |
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