“Pengembangan Lembar Kerja Peserta Didik Berbasis Problem Based Learning-Flipped Classroom untuk Meningkatkan Kemampuan Transformasi Pengetahuan : The Development of Students’ Problem Based Learning-Flipped Classroom Worksheets to Improve Knowledge Transformation Ability ” (2018) Edu-Sains: Jurnal Pendidikan Matematika dan Ilmu Pengetahuan Alam, 7(2), pp. 32-40. doi: 10.22437/jmpmipa.v7i2.8205.