ANALISIS KESULITAN KEMAMPUAN PEMAHAMAN KONSEP MATEMATIS DITINJAU DARI SELF-CONFIDENCE PADA MATERI SPLTV. JPPM [Internet]. 2022 Jul. 2 [cited 2025 Jul. 2];4(1):398-406. Available from: http://jurnal.mipatek.ikippgriptk.ac.id/index.php/JPPM/article/view/409