Clarifications:
Essential Understandings
Concrete:
- Make a set of base ten blocks that represents a two-digit number.
- Add or take away another set of base ten blocks that represents 10.
- Recount the set to get a sum or difference.
- Make a visual representation of base ten blocks that represents a two-digit number.
- Add or take away a visual representation of another set of base ten blocks that represents 10.
- Recount the set to get a sum or difference.
- Understand the following concepts and vocabulary: more, less.
| Number: MAFS.1.NBT.3.AP.5a | Category: Access Points |
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Cluster:
Use place value understanding and properties of operations to add and subtract. (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. |