1 MATERIALS [20]- POPULATION

2.1 MATERIALS [20]- Population: The target population in this study at IUH, Thanh Hoa campus includes the students (N= 200) who study at the Faculty of Technology, and Economics. The total of 1500 students at IUH, Thanh Hoa campus, out of these number 200 students were selected as the target population for this research. - Sampling: The questionnaires are conducted in four classes at IUH, Thanh Hoa Campus. The researcher asked the English teachers of these four classes for help that deliver the questionnaires and ask students to take part into the survey. - Data collection instruments: The survey for measuring intrinsic motivation included 11 questions and was constructed in bilingual languages (English and Vietnamese). The section A, 6 demographic questions aimed to measure demographic characteristics. The section B, 5 questions addressing students‘ intrinsic motivation factor.