Trisnowati, Eli, and Yosaphat Sumardi. 2019. “eveloping the tudent orksheet ith roblem-olving pproach to mprove ritical hinking kills and the oncept nderstanding of hysics”. omentum: hysics ducation ournal 3 (1):32-41. https://doi.org/10.21067/mpej.v3i1.3344.