Danu Eko Agustinova, Nur Lailly Tri Wulansari, and Kurnia Nur Fitriana. 2025. “he mproving the rofessional ompetence of igh chool eachers in ogyakarta hrough the evelopment of lassroom ction esearch anagement (PTK) ased on ndroid obile pplications”. ournal of cience and ducation (JSE) 5 (2):499-519. https://doi.org/10.58905/jse.v5i2.466.