Computer assisted instruction on topic of Atomic structure for Undergraduate Students in the Faculty of Engineer at Rajamangala University of Technology Lanna Payap

This research aims (1) to assess a computer-assisted on atomic structure which is taught in the course Chemistry for Engineers (2) observe the students achievement (3) study of student satisfaction with the CAI. Samples of this study were students enrolled in Semester 1 Year 2554, Total of 5 groups 161 students, including (1) First year Civil Engineering (2) First year Electrical engineering - Electrical Power (3) Second year Industrial Education and technology (4) First year agricultural machinery engineering (5) First year Electrical engineering Research tools used in this study were (1) the computer assisted instruction (CAI) on atomic structure were created by the researcher (2) An Examination were conducted to measure the students achievement (3) an evaluation of satisfaction form on the computer assisted(CAI). Results of the study are as follows: Found that CAI’s atomic structure. Used in the teaching chemistry for engineers code 13020121 in Semester 1 2554 has a high efficiency (E1 / E2) equal to 88.49 / 82.35, the average test scores of the students after using CAI were 88.49 percent and 82.35 percent who have passed all test scores after learning purposes The achievement of students taught by CAI, found that CAI was help students learning increased as seen from average test score prior to using CAI have increase at significance level of .000 (the t - test = 30.49 at df = 33) by the average test score was 30.97 and the average posttest score was 16.76. The test score prior before and after using CAI have a moderate correlated (0.435 at significance level 0.01). When assessing students satisfaction toward CAI have a satisfaction score of strongly agree. The average satisfaction level of all evaluation items were ranged from 4.76 to 4.94, and the overall average was 4.85, suggesting that this CAI is very high quality and the satisfaction of the students.