The Development of Welding Practical Skills and Learning Achievement of the First Year Vocational Certificate Students Using Harrow's Practical Skills Together with Demonstrated Instruction

Abstract

This research aimed: 1) to develop welding operation skills of the first year vocational certificate students by using Harrow's practical skills learning management together with demonstration teaching, and 2) to develop learning achievement Introduction to welding and sheet metal of the first year vocational certificate students by using Harrow's practical skills learning management together with demonstration teaching. The research target group was 20 students from Rakthai Naklang Business Administration Technological College, the second semester of academic year 2021. This research is a pre-experimental research model by studying one group to measure the results after studying. There were two types of tools used in this research as follows: 1) the experimental tools were the learning management plan using Harrow's practical skills learning method together with the demonstration teaching, 6 plans, 2) the tools used for collecting the data were: 2.1) A scale of Welding Operation Skills, 3-item, with the difficulty value between 0.63-0.80, the discrimination value between 0.21-0.42, and the reliability value equaled 0.64, and 2.2) A 4-choice, 30-item achievement test with the difficulty value between 0.39-0.72, the discrimination value between 0.22-0.56, and the reliability value was 0.89. The statistics used to analyze the data were mean scores, standard deviations, and percentages.

            The research results were found that: 1) the first year vocational certificate students had skills in welding operation from learning by Harrow's practical skills learning management together with demonstration teaching – the students’s average scores was 48.75 or 90.23 percent, and there were 20 students passing the criteria, accounting for 100 percent of the total number of students. 2) The average scores of learning achievement of the 1st year vocational certificate students by using Harrow’s practical skills learning management together with demonstration teaching was 23.50 or 78.33 percent, and there were 16 students passing the criteria, accounting for 80.00 percent of the total number of students.