Billik, Agsen Hosanty Susana. “The Analysis of Problems and Alternatives in Teaching and Learning Science in SMPN 1 Soe During The Covid -19 Pandemic”. Quagga: Jurnal Pendidikan Dan Biologi, vol. 15, no. 2, July 2023, pp. 214-9, doi:10.25134/quagga.v15i2.45.