Danu Eko Agustinova, Nur Lailly Tri Wulansari, & Kurnia Nur Fitriana. (2025). The Improving the Professional Competence of High School Teachers in Yogyakarta Through the Development of Classroom Action Research Management (PTK) Based on Android Mobile Applications. Journal of Science and Education (JSE), 5(2), 499-519. https://doi.org/10.58905/jse.v5i2.466