Construct	Item	Indicator
Content	C1	The course content is covered to an appropriate degree of breath.
	C2	Information from the e-class is concise and clear.
	C3	The content of the e-class is up-to-date.
	C4	The design of the content (fonts, style, color, image, video) is good and meets the quality standard.
	C5	The contents provide me with different learning styles (e.g., flash animation, video, audio, text, simulation, etc.) and they are interesting and appropriate to my study.
System	S1	The e-class is easy to use.
	S2	The e-class is easy to navigate.
	S3	The e-class includes the necessary features and functions that I need.
	S4	The e-class does not crash frequently.
	S5	There are enough and clear instructions about how to use e-class.
	S6	The responsible service personnel are available and cooperative when facing an error in the e-class.
Learner	L1	I have a positive attitude toward using the e-class.
	L2	My previous experience with the e-learning helped me to use the e-class.
	L3	I am able to perform the tasks in the e-class successfully.
Instructor	I1	The instructor is enthusiastic about teaching the class online.
	I2	Generally, my instructors have positive attitude to the utilization of the e-class.
	I3	The instructors’ style of presentation holds me interest.
	I4	The instructor handles the e-learning class effectively.
Interaction	IN1	The e-class provides interactivity and communication facilities such as chat, forums, and announcements.
	IN2	The e-class supports an effective and efficient sharing of information with my classmates
	IN3	The instructor promptly responds to questions and concerns via the e-class.
	IN4	The instructor is good at communication with the students via the e-class.
	IN5	I communicated with other students about the course contents through diverse communication tools in e-class.
	IN6	I did not face problems accessing the online course materials.
Student satisfaction	SS1	I am satisfied with the performance of the e-class.
	SS2	The e-class satisfies my educational need.
	SS3	Overall, I am pleased with the experience of using the e-class
	SS4	The e-class is a very effective educational tool and has helped me to improve my learning process.