Purba, L. S. L., Marpaung, M. E., Harefa, N. ., & Purba, A. . (2021). Improvement Physics 1 of Chemistry Learning Outcomes Through Project-Based Learning Models (PjBL) Using Quizizz Online Learning Media. Jurnal Akademika Kimia, 10(3), 203–207. https://doi.org/10.22487/j24775185.2021.v10.i3.pp203-207