Clarifications:
Essential Understandings
Concrete:
- Make a set of base ten blocks that represents a two-digit number that is multiple of 10.
- 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 that is multiple of 10.
- 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.
- Use a hundreds chart to count forwards or backwards by 10’s from any given two-digit number that is a multiple of 10.
- Understand the following concepts and vocabulary of more, less.
| Number: MAFS.2.NBT.2.AP.8a | 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. |