Hanifah, Amalia, Erman Erman, and Dhita Ayu Permata Sari. 2022. “SOME CONSTRAINTS IN IMPLEMENTING NUMBERED HEADS TOGETHER COOPERATIVE MODEL IN ONLINE LEARNING IN THE COVID-19 PANDEMIC”. PENSA E-JURNAL: PENDIDIKAN SAINS 10 (1):81-85. https://doi.org/10.26740/pensa.v10i1.41599.