The Effects of Writing activities Based on Polya's Problem solving Stages on Learning Accomplishment and Attitudes (Polya의 문제해결 단계에 따른 쓰기 활동이 학업성취도와 수학적 태도에 미치는 영향)
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- Journal of Elementary Mathematics Education in Korea
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- v.17 no.1
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- pp.87-103
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- 2013