A mathematical modeling for education von Tambunan, Hardi

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The Effectiveness of the Problem Solving Strategy and the Scientific Approach to Students' Mathematical Capabilities in High Order Thinking Skills von Tambunan, Hardi

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Impact of Heuristic Strategy on Students' Mathematics Ability in High Order Thinking von Tambunan, Hardi

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The Dominant Factor of Teacher’s Role as A Motivator of Students’ Interest and Motivation in Mathematics Achievement von Tambunan, Hardi

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ETNOMATEMATIKA: EKSPLORASI ORNAMEN RUMAH BOLON BATAK TOBA TERHADAP KONSEP GEOMETRI von Susi Sihombing, Hardi Tambunan

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Mathematical Model for Mapping Students’ Cognitive Capability von Tambunan, Hardi

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Analysis of teacher performance to build student interest and motivation towards mathematics achievement von Tambunan, Hardi, Sinaga, Bornok, Widada, Wahyu

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DAMPAK PEMBELAJARAN ONLINE SELAMA PANDEMI COVID-19 TERHADAP RESILIENSI, LITERASI MATEMATIS DAN PRESTASI MATEMATIKA SISWA von Hardi Tambunan

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Performance of Mathematics Teachers to Build Students' High Order Thinking Skills (HOTS) von Tambunan, Hardi, Naibaho, Tutiarny

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Analysis Of Students ' Understanding Of Mathematical Concepts In Class Viii Function Material Smp Negeri Satu Atap Tanjung Balai T.P 2021/2022 von Thota Murni Gultom, Hardi Tambunan

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Analysis diagnostic of inguinal hernia disease using method certainty factor von Tambunan, F. R., Harumy, T. H. F., Hardi, S. M.

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Influence of Static VAR Compensator Application for Improving Power Quality in Distribution Lines Supplied Industry von Rohana, Hardi, Surya, Tambunan, J D A, Hasibuan, Arnawan

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