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Amir, Mohammad Faizal and Chotimah, Chusnul and Fediyanto, Niko and Rudyanto, Hendra Erik Mengembangkan Prototipe Media 3Dmetric Melalui Hypothetical Learning Trajector untuk Melatihkan Kemampuan Spatial Siswa. Draft Prototipe Media 3Dmetric. (Unpublished)