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http://dx.doi.org/10.7468/jksmec.2017.20.2.163

The Effect of the Indication of Lengths and Angles on Classifying Triangles: Centering on Correct Answer Rate and Eye Movements  

Yun, Ju Mi (The Graduate School of Korea National University of Education)
Lee, Kwang-ho (Korea National University of Education)
Lee, Jae-Hak (Korea National University of Education)
Publication Information
Education of Primary School Mathematics / v.20, no.2, 2017 , pp. 163-175 More about this Journal
Abstract
The purpose of the study is to identify the effect of length and right angle indication on the understanding of the concept of the figure when presenting the task of classifying the plane figures. we recorded thirty three 4th grade students' performance with eye-tracking technologies and analyzed the correct answer rate and gaze duration. The findings from the study were as follows. First, correctness rate increased and Gaze duration decreased by marking length in isosceles triangle and equilateral triangle. Second, correctness rate increased and Gaze duration decreased by marking right angle in acute angle triangle and obtuse triangle. Based on these results, it is necessary to focus on measuring the understanding of the concept of the figure rather than measuring the students' ability to measure by expressing the length and angle when presenting the task of classifying the plane figures.
Keywords
Indication Length; Angle; Triangle; Classification; Eye Tracker; Eye Movement;
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