Khuntee K. The development of a teaching package to support group learning management achievement Introduction to Basic Operating Systems Vocational Diploma Program (Vocational Certificate). JTechEE [internet]. 2024 May 1 [cited 2026 Sep. 27];15(2). available from: https://so10.tci-thaijo.org/index.php/FTEJournal/article/view/881