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Middle School Students' Understanding of Constant Rate of Change in Functional Situations Using SimCalc MathWorlds  

Ma, Minyoung (Indong Middle School)
Publication Information
Journal of Educational Research in Mathematics / v.27, no.3, 2017 , pp. 599-614 More about this Journal
Abstract
The purpose of this study is to compare and analyze middle school students' understanding of constant rate of change, in terms of observing, representing and interpreting dynamic functions in various ways using the SimCalc MathWorlds. For this purpose, parts of a class conducted for six students in the first grade of middle school were analyzed. The results suggested two implications for a class that used this program (SimCalc MathWorlds): First, we confirmed that the relationships between the two quantities that students notice in the same situation can be different. Second, the program helped students to develop a more comprehensive understanding of the meaning of the constant rate of change. The study also revealed the need to use technology in teaching and learning about functions, particularly to represent and interpret a given situation that involves the constant rate of change in various ways. Further, the results can contribute to developing contents and methods to teach functions using technology in consideration of students' different levels of understanding.
Keywords
functions; technology; SimCalc MathWorlds; constant rate of change;
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