N. Nurfadilah, R. . Asra, and S. Syaiful, “Pengaruh Model Pembelajaran Predict Observe Explain dan Motivasi terhadap Higher Order Thinking Skills Siswa : (The Effect of Predict Observe Explain Learning Model and Motivation on Students’ Higher Order Thinking Skills)”, Biodik , vol. 7, no. 2, pp. 143-152, Jun. 2020.