Roni Handika Putra, R., Asrial and Jefri Marzal (2021) “Pengembangan Rencana Pelaksanaan Pembelajaran Model Problem Based Learning Daring untuk Meningkatkan Motivasi Belajar Siswa Materi Perubahan Lingkungan: (Development of Online Problem Based Learning Implementation Plans to Increase Student Motivation on Environmental Change Materials)”, BIODIK, 7(01), pp. 84-94. doi: 10.22437/bio.v7i01.11775.