The Development of a Self-Learning Video Package to Enhance English Proficiency for TOEIC Preparation for Thai Undergraduate Students at Rajamangala University of Technology Tawan-ok
บทคัดย่อ
This study aimed to (1) develop an effective self-instructional video package for TOEIC preparation based on the 80/80 efficiency criterion, (2) compare learning achievement between an experimental group and a control group, and (3) examine students’ satisfaction and opinions toward the developed media. The participants consisted of 92 undergraduate students, divided equally into an experimental group (n = 46) and a control group (n = 46). The research instruments included seven instructional video lessons, an achievement test, a satisfaction questionnaire, and a semi-structured interview. Data were analyzed using the E1/E2 efficiency indices, t-tests, and qualitative content analysis.
The findings revealed that the developed media met the specified efficiency criterion (E1 = 80.11, E2 = 87.26). The experimental group showed significantly higher post-test achievement scores than the control group at the .05 level of significance. Students reported a high level of satisfaction, particularly with the content quality and the learning system. Suggestions for improvement included adding interactive activities, providing content summaries, and enhancing system stability. The media design was grounded in Knowles' theory of andragogy and Grow’s Self-Directed Learning (SSDL) Model, supporting a structured and progressive approach to autonomous learning. The instructional package shows potential for adaptation in English courses aimed at standardized test preparation or other specific purposes in various educational contexts.
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