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Applying Quantitative Reasoning To Clarify Arc Measurements, David Glassmeyer, Daniel Barton
Applying Quantitative Reasoning To Clarify Arc Measurements, David Glassmeyer, Daniel Barton
Georgia Educational Researcher
The importance of reasoning quantitatively is reflected in both mathematics education research and mathematical standards for K-12 students. In this article, we detail how a quantitative reasoning framework can be used to help differentiate two quantities we have found students often struggle with: arc length and the measure of a central angle. We argue that taking the time to define all four components of a quantity can support students’ understanding of theorems involving these quantities.