The Development of Three Dimensions Model of Sling Tension

Abstract

The purposes of the study were to 1) develop and find the efficiency of three dimensions model of tension in sling using for engineering mechanics subject’s activity of high vocational certificate students in mechanical technic at Nakhonpathom Technical College 2) compare the test results before and after studying by three dimensions model of tension in sling and 3) study the satisfaction of first-year students in high vocational certificate in group one and two , mechanical technic department at Nakhonpathom Technical College towards three dimension model of tension in sling. The participants were 30 first - year students in high vocational certificate in group one and two, mechanical technic department at Nakhonpathom Technical College who registered in engineering mechanics subject in the second semester of year 2565. The sampling method used in this study was purposive sampling method. The instruments used for gathering data were 1) three dimensions model of tension in sling 2) instructional media, and instructional documents 3) pre-test and post - test 4) the questionnaires. The data analyses used were percentage, mean, standard deviation and t - test dependent. The results of the study were as follows: 1) The efficiency of three dimensions model of tension in sling and the instructional materials E1/E2 were 78.80/74.67 that was higher than the predetermined 70/70. 2) The result of the post-test scores of the students was significantly higher than the pre-test scores at 0.05 3) The students’ satisfaction towards three dimensions model of tension in sling was in high level.