Hidayat, Helmy, Pondok Pesantren Al Ihsan Riau, Desa Kubang Jaya Kec Siak Hulu, Kampar, Riau, 28452, Indonesia, Indonesia
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Vol 5, No 3: July 2021 - Articles
The Problem Based Learning Model in Improving Concept Understanding and Self-Confidence Identification on Chemical Bonds at SMA Negeri 13 Pekanbaru
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