Model addition and subtraction with base ten blocks within 100.
Clarifications:
Essential Understandings
Concrete:
- Make a set of base ten blocks within 100.
- Add “more” to a set or “take from” or “take apart” a set.
- Recount the set to get a sum or a difference within 100.
- Make a visual representation of a set of base ten blocks within 100.
- Add “more” to a set or “take from” or “take apart” a set.
- Recount the set to get a sum or a difference within 100.
| Number: MAFS.2.NBT.2.AP.5b | Category: Access Points |
| Date Adopted or Revised: 06/14 |
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. |