Devi, Via Monica, Susilawati, and Kosim. 2023. “Feasibility of Science Learning Devices With Integrated PBL Models of STEM Approach to Improve Students’ Problem-Solving Ability and Self-Efficacy”. Journal of Classroom Action Research 5 (SpecialIssue):47-51. https://doi.org/10.29303/jcar.v5iSpecialIssue.4351.