Validity Test Analysis of Virtual Laboratory-Based Job Sheet for Power Electronics Course

Abstract

This study discusses the validity test analysis of a Virtual Laboratory-Based Job Sheet (VLBJS), which is used as a practicum learning medium for vocational education students in higher education. The Virtual laboratory-based Job Sheet is used as a practicum guide for students in the Power Electronics Practicum Course, at the Department of Electrical Engineering, Universitas Negeri Padang, Indonesia. Validity test analysis is important to ensure that this VLBJS is suitable for use in the learning process. This study involved 18 experts: learning material experts, learning media experts, and language experts. The rubric for assessing validity with a Likert scale was used to collect the research data. The validity test analysis was carried out based on the results of the expert's assessment by filling out the validity assessment instrument. Partial Least Square (PLS) analysis was used to analyze the validity and reliability of the indicators of each variable in the research instrument. Meanwhile, the analysis of validity tests on Virtual Laboratory-Based Job Sheets was carried out using the Aikens' V formula. The results showed that Virtual Laboratory-Based Job Sheets met the valid criteria from all aspects, namely the aspects of learning materials, learning media, and language. Thus, it can be concluded that the Virtual Laboratory-Based Job Sheet is valid as a practicum guide for vocational education students in the Power Electronics Practicum learning process.