Research on effects of Computer Simulation Instruction on "Welding Practice Unit" for Refrigeration and Air-conditioning Department in Senior Vocational High School

[[abstract]]The purpose of this study was to evaluate the influences of learning achievement on welding learning for students in vocational high school on different computer literacy and spatial ability in refrigeration and air-conditioning department? In order to achieve the study purpose, experimental method was used for the first grade in two classes from Vocational High School Students in refrigeration and air-conditioning department after the literature review at first. The instruction was conducted within four weeks. The tools which were used include ” Computer Simulation System “, ”Computer Literacy Scales”, “Spatial Ability Scales” and ”Learning Achievement on Welding Learning”. After the data collection and analysis, we verify that the path model in computer literacy, spatial ability and learning achievement were existed. The results of this study included: 1. The performance of spatial visualization was influenced directly by students’ skill simulation test. 2. The performance of computer attitude was influenced directly by students’ skill simulation test. 3. Skill performance was influenced by students’ spatial visualization through the skill simulation test. 4. Skill performance was influenced by students’ computer attitude through the skill simulation test. 5. The performance of skill simulation test was influenced directly by students’ simulation cognitive test and skill performance. Finally, suggestions for administrators, teachers and future research were proposed.