Polytechnic University of Valencia Congress, Sixth International Conference on Higher Education Advances

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Student Understanding of Number Line Graphs
Alison Mirin

Last modified: 28-04-2020


This paper addresses how students understand number line graphs. Utilizing a Think Aloud interview followed by a reflection-eliciting interview, we investigate how two successful College Algebra students understand what it means to graph a statement with one free variable on a number line.  These particular students show a mathematically non-normative understanding of this concept; to wit, they do not view the number line graph as representing a solution set. This study illustrates the importance of future research into how students understand the concept of solution representation via number line graphs.

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