Akbar, F.H., Rahayu, R. and Wanabuliandari, S. 2022. The Effectiveness of PBL Model with STEAM Approach Assisted by Android Application on Students’ Mathematical Problem Solving Ability. Journal of Education Technology. 6, 3 (Sep. 2022), 548–559. DOI:https://doi.org/10.23887/jet.v6i3.45693.