Clarifications:
Essential Understandings
Concrete:
- Use a pipe cleaner to measure the radius and compare it to the arc length.
- Measure the radius of a circle.
- Use a protractor to measure angles.
- Use geometry software to manipulate circles based on their radius and circumference.
- Given an angle and the radius, use the formula (θ
to find the arc length. - Calculate the circumference of a circle.
- Use appropriate tools to calculate the arc length of a circle.
- Understand the following concepts and vocabulary: radian, degree, arc, arc length and circumference.
| Number: MAFS.912.G-C.2.AP.5a | Category: Access Points |
| Date Adopted or Revised: 07/14 |
Cluster:
Find arc lengths and areas of sectors of circles. (Geometry - Additional 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. |