Abstract
The Purpose of this study was to explore the methods of generalization and errors pattern generated by mathematically gifted students and non-gifted students in elementary school. In this research, 6 problems corresponding to the x+a, ax, ax+c, $ax^2$, $ax^2+c$, $a^x$ patterns were given to 156 students. Conclusions obtained through this study are as follows. First, both group were the best in symbolically generalizing ax pattern, whereas the number of students who generalized $a^x$ pattern symbolically was the least. Second, mathematically gifted students in elementary school were able to algebraically generalize more than 79% of in x+a, ax, ax+c, $ax^2$, $ax^2+c$, $a^x$ patterns. However, non-gifted students succeeded in algebraically generalizing more than 79% only in x+a, ax patterns. Third, students in both groups failed in finding commonness in phased numbers, so they solved problems arithmetically depending on to what extent it was increased when they failed in reaching generalization of formula. Fourth, as for the type of error that students make mistake, technical error was the highest with 10.9% among mathematically gifted students in elementary school, also technical error was the highest as 17.1% among non-gifted students. Fifth, as for the frequency of error against the types of all patterns, mathematically gifted students in elementary school marked 17.3% and non-gifted students were 31.2%, which means that a majority of mathematically gifted students in elementary school are able to do symbolic generalization to a certain degree, but many non-gifted students did not comprehend questions on patterns and failed in symbolic generalization.
본 연구의 목적은 초등수학영재와 일반학생들의 대수에서의 패턴 일반화 방법은 어떠한지 알아보고, 패턴을 일반화하는 과정에서 나타나는 오류를 조사하는 것이다. 본 연구에서는 초등학교 6학년 수학영재 78명과 일반학생 78명을 대상으로 증가패턴인 x+a, ax, ax+c, $ax^2$, $ax^2+c$, $a^x$ 형태의 6개 문항으로 이루어진 검사지를 활용하여 조사하였다. 연구 결과에 의하면 두 집단 모두 ax 유형에서 상징적 일반화를 가장 잘 하였고, $a^x$ 유형은 상징적 일반화를 한 학생이 가장 적었다. 또 시각적인 패턴으로 도형이 등장하는 경우 도형 하나하나가 개수로서의 의미라면 문제를 이해하는 데 큰 혼란이 없지만, 도형의 변이나 둘레 등 구성 요소의 의미를 파악해야 하는 문제라면 혼란을 겪는 것으로 나타났다. 학생들이 흔히 범하는 오류의 유형에서는 처리 기술의 오류가 초등수학영재(10.9%)와 일반학생(17.1%) 모두에서 가장 높게 나타났다.