Haqiqi, K.T., Hariyono, E. and Lestari, N.A. 2021. The Effectiveness Of Online Based Physics Learning In The Covid-19 Pandemic Period On The Material Of Work And Energy. PENDIPA Journal of Science Education. 5, 3 (May 2021), 451–458. DOI:https://doi.org/10.33369/pendipa.5.3.451-458.