Mawengkang, Herman, University of Sumatera Utara, Medan, Jl. Bioteknologi No.1, Medan, North Sumatera, Indonesia
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Infinity Journal Vol. 7 No. 1 (2018): Volume 7 Number 1, INFINITY - Manuscript
THE DIFFERENCE OF STUDENTS’ ACHIEVEMENT IN MATHEMATICS BY USING GUIDED-DISCOVERY LEARNING MODEL AND COOPERATIVE LEARNING MODEL JIGSAW TYPE
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