Clarifications:
Essential Understandings
Concrete:
- Identify the beginning and end point of the object that needs to be measured.
- Line up the beginning of the object at the zero point on the ruler.
- Determine the length of the object, in exact whole units, based on the location of the object’s endpoint in relation to the ruler.
- Using a visual representation of an object with its beginning point lined up at the zero point on the visual representation of a ruler, determine the length of the object based on the location of the object’s endpoint in relation to the ruler.
- Understand the following concepts and vocabulary: ruler, length, endpoint, zero point, beginning point.
| Number: MAFS.1.MD.1.AP.aa | Category: Access Points |
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Cluster:
Measure lengths indirectly and by iterating length 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. |