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중학교 수학 교과서에 제시된 기울기의 개념에 관한 유형 분석
Journal of the Korean School Mathematics
◽
10.30807/ksms.2019.22.4.001
◽
2019
◽
Vol 22
(4)
◽
pp. 351-367
Author(s):
강영란
◽
Cheong-Soo Cho
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