Mathematics · Pedagogy of Mathematics
A 6th-grade student uses a protractor to measure angles on a worksheet. He/she measures an 80° angle as 100°, a 60° angle as 120°, and a 70° angle as 110°. What is the most appropriate reason for this error?
- 1He is right in doing so as both the measures have the same meaning.
- 2He is not aligning the vertex of the angle with the center of the protractor.
- 3He has not grasped the skill to read an angle in the correct direction using a protractor.✓
- 4He is holding the protractor incorrectly.
Correct answer
He has not grasped the skill to read an angle in the correct direction using a protractor.
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