Education of Primary School Mathematics (한국수학교육학회지시리즈C:초등수학교육)

Korean Society of Mathematical Education (한국수학교육학회)
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Cognitive process and cognitive load about the concept image of triangle altitude in visual image

시각적 이미지 안에서 삼각형 높이의 개념 이미지에 대한 인지적 처리과정과 인지적 부하

  • Lee, Mi Jin (Graduate School of Korea National University of Education) ;
  • Lee, Kwangho (Korea National University of Education)
  • Received : 2017.10.17
  • Accepted : 2017.10.30
  • Published : 2017.10.31
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Abstract

In the process of finding the triangle height, 26 students in the 6th grade were surveyed to understand the students' triangle height through the eye movement data and to investigate the cognitive load of the students. As a result, the correctness rate of the pre-test was significantly increased in the post-test, and the frequency and retention of gaze data were smaller in the post-test than in the AOI of each question. The Participants's subjective cognitive load indicated that it was more difficult to understand the concept of rotated triangles compared with upright triangles that were parallel to the ground. More frequent and more retentions in the eye-tracking data were detected in the right triangles and acute triangles by rotating configuration. Eye movement data show that eye tracking technology can provide an objective measure of students' cognitive load for feedback on instructional design.

삼각형 높이를 찾는 과정에서 눈 움직임 데이터를 통해 학생들의 삼각형 높이에 대한 이해와 그에 대한 삼각형 유형별, 배치별 인지부하 알아보고자 하였다. 6학년 26명 학생들을 대상으로 콘텐츠를 활용한 수업을 진행하고, 사전 사후검사를 실시하였다. 그 결과 삼각형 높이에 대한 삼각형 유형별, 배치별 문항에서 사전 검사에 대해 사후검사에서 정답률이 크게 상승하였으며, 아울러 각 문항별 AOI(Area of Interest)에서 시선 데이터의 빈도(FC)와 머무름(FD)이 사후검사에서 더 적게 나타났다. 주관적 인지부하는 밑변이 지면에 평행한 삼각형 보다는 회전된 삼각형 배치에서 더 높게 나타났으며, 시선 추적 데이터에서는 직각삼각형과 예각삼각형의 회전 배치된 쪽에서 더 많은 빈도와 더 많은 머무름이 감지되었다. 이를 통해 시선추적 기술은 교수설계의 피드백을 위한 학생들의 인지적 부하의 객관적인 측정을 제공할 수 있음을 알 수 있었다.

Keywords

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