Direct Current Electric Circuit-Visualization Skills Instrument Test (DCEC-ViSIT) to Measure High School Student’s Visualization Skills
), Andi Suhandi(2), Achmad Samsudin(3) (1) Universitas Pendidikan Indonesia, Indonesia
(2) Universitas Pendidikan Indonesia, Indonesia
(3) Universitas Pendidikan Indonesia, Indonesia
Corresponding AuthorCopyright (c) 2025 Resti Sundari, Andi Suhandi, Achmad Samsudin
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Abstract
This research aims to develop instrument test visualization skills on direct current electric circuits. The research method used is the development of a 4D model consisting of defining, designing, developing, and disseminating. The participants in this research consisted of 33 high school students in West Java who were randomly selected. The first analysis is an analysis of the results of expert validation using CVR, which is considered valid. The second analysis is the Rasch analysis, which obtained raw variance data with special interpretation and declared the questions valid. The third stage is the analysis of the parameters of the items included in the interpretation of "very appropriate" and "appropriate". The fourth stage of the reliability analysis used Rasch analysis, which showed that overall visualization skills items were reliable with a Cronbach Alpha of 0.71. But the consistency of the answers from the respondents is weak. Students' visualization skills need to be improved through models, methods, and visual media that support visualization skills.
Keywords: visualization skills, direct current electrical circuits, 4D model, Rasch analysis.
DOI: http://dx.doi.org/10.23960/jpmipa/v24i1.pp84-97
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