Clarifications:
Essential Understandings
Concrete:
- Identify which unit of measurement to use when estimating the length of objects (shorter objects use inches, longer objects use feet).
- Using common items to create measurement benchmarks (Ex: the length of an elbow to wrist is about one foot long, a piece of paper is about 12 inches long) to assist when estimating length.
- Estimate the length of an object, then measure the distance of the estimate and compare it to the actual length of the object, to determine the accuracy of the estimate.
- Using a visual representation of common items, create measurement benchmarks to assist when estimating length.
- Understand the following concepts, symbols, and vocabulary of estimate, foot, inch, longer, shorter.
| Number: MAFS.2.MD.1.AP.3a | Category: Access Points |
| Date Adopted or Revised: 06/14 |
Cluster:
Measure and estimate lengths in standard units. (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. |