Nasip, F. . F. M.; Lajium, D. A. D.; Kiflee, D. N. A. ANALISIS FAKTOR PENEROKAAN & KEBOLEHPERCAYAAN INSTRUMEN AMALAN PDP STEM-TPACK, PEMBANGUNAN PROFESIONAL, SIKAP DAN EFIKASI KENDIRI PENSYARAH POLITEKNIK MALAYSIA: EXPLORATORY FACTOR ANALYSIS AND RELIABILITY OF THE INSTRUMENT FOR STEM-TPACK TEACHING PRACTICES, PROFESSIONAL DEVELOPMENT, ATTITUDE, AND SELF-EFFICACY AMONG MALAYSIAN POLYTECHNIC LECTURERS. IJEPC 2026, 11, 1072-1083.