Items where Author is "Pinem, Helda Valentina Br."
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Sitanggang, Saut Lamhot and Pinem, Helda Valentina Br. (2019) PENERAPAN MODEL PEMBELAJARAN PROJECT BASED LEARNING (PBL) UNTUK MENINGKATKAN KEMAMPUAN PEMAHAMAN KONSEP SISWA. In: Prosiding Seminar Nasional Fakultas Ilmu Sosial Universitas Negeri Medan, 2019, Universitas Negeri Medan.