The Use of Traditional Algorithmic Versus Instruction with Multiple Representations: Impact on Pre-Algebra Students' Achievement with Fractions, Decimals, and Percent

전통적 알고리즘 교수법과 다양한 표상을 활용한 교수법의 비교: 분수, 소수, 퍼센트 내용을 중심으로

  • Received : 2016.04.29
  • Accepted : 2016.06.02
  • Published : 2016.06.30

Abstract

The purpose of this study was to investigate the impact of multiple representations on students' understanding of fractions, decimals, and percent. The instructional approach integrating multiple representations was compared to traditional algorithmic instruction, a form of direct instruction. To examine and compare the impact of multiple representations instruction with traditional algorithmic instruction, pre and post tests consisting of five similar items were administered with 87 middle school students. Students' scores in these two tests and their problem solving processes were analyzed quantitatively and qualitatively. The quantitative results indicated that students taught by traditional algorithmic instruction showed higher scores on the post-test than students in the multiple representations group. Furthermore, findings suggest that instruction using multiple representations does not guarantee a positive impact on students' understanding of mathematical concepts. Qualitative results suggest that the limited use of multiple representations during a class may have hindered students from applying their use in novel problem situations. Therefore, when using multiple representations, teachers should employ more diverse examples and practice with multiple representations to help students to use them without error.

본 연구는 수학의 다양한 표상이 학습자의 분수, 소수 및 퍼센트에 대한 이해에 어떤 영향을 주는지 분석하는 것을 목적으로 하였다. 다양한 표상을 활용한 교수법을 전통적 알고리즘 교수법과 비교하고자 87명의 중학교 학생들을 대상으로 사전, 사후 검사를 실시하였다. 사전, 사후 검사는 각각 5개의 비슷한 문항으로 구성되었으며, 문항에 대한 학생들의 답안을 양적, 질적으로 분석하였다. 양적 분석 결과에 따르면, 전통적 알고리즘 교수법으로 지도 받은 학생들이 다양한 표상을 활용한 교수법에 의해 지도받은 학생들에 비하여 높은 점수를 나타내었다. 또한, 다양한 표상을 활용한 교수법이 학생들의 수학적 개념에 대한 이해를 보장해 주지는 못함이 드러났다. 질적 분석 결과에 따르면, 수학 교실에서 다양한 표상을 제한적으로 활용할 경우, 오히려 다양한 수학적 표상은 학생들이 문장제 문제를 푸는 과정에서 응용을 방해하는 것으로 나타났다. 본 연구결과에 따르면, 교사는 수학 교실에서 다양한 표상을 활용함에 있어서 반드시 여러 가지 예시와 연습을 통해 학습자들이 다양한 표상을 제대로 이해하고, 연습할 수 있도록 도와야 할 것이다.

Keywords

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