THE ROLE OF CONSTRUCTIVISM-BASED LEARNING IN IMPROVING MATHEMATICAL HIGH ORDER THINKING SKILLS OF INDONESIAN STUDENTS by Ani Minarni, E. Elvis Napitupulu

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MATHEMATICAL UNDERSTANDING AND REPRESENTATION ABILITY OF PUBLIC JUNIOR HIGH SCHOOL IN NORTH SUMATRA by Ani Minarni, Elvis Napitupulu, Rahmad Husein

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PENINGKATAN KEMAMPUAN LITERASI MATEMATIK DENGAN MENGGUNAKAN MODEL PROJECT-BASED LEARNING by Siti Maysarah, Sahat Saragih, Elvis Napitupulu

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The Difference of Students’ Mathematical Communication Ability Taught by Cooperative Learning Model Think Talk Write Type and Numbered Head Together Type by Meiva Marthaulina Lestari Siahaan, E. Elvis Napitupulu

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ANALYSIS OF STUDENT RESPONSE TO THE IMPLEMENTATION OF THE ETHNO-FLIPPED CLASSROOM MODEL ASSISTED BY COLLABORATIVE CLOUD CLASSROOM by Rahmi Ramadhani, E. Elvis Napitupulu, Pardomuan Sitompul

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MATHEMATICAL UNDERSTANDING AND REPRESENTATION ABILITY OF PUBLIC JUNIOR HIGH SCHOOL IN NORTH SUMATRA by Ani Minarni, E. Elvis Napitupulu, Rahmad Husein

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Cultivating Upper Secondary Students’ Mathematical Reasoning -Ability and Attitude towards Mathematics Through Problem-Based Learning by E. Elvis Napitupulu, Didi Suryadi, Yaya S. Kusumah

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