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This research aims to the development of a Multitier Open-ended Work and Energy Instrument (MOWEI) using Rasch analysis and identifies students' misconceptions. This research method uses the 4D model (Defining, Designing, Developing, and Disseminating). The research participants involved were 30 Javanese students from XI class (12 male students called “Mas” and 18 female students called “Mba”), the average age was 16 years old. The development of a close-ended four-tier instrument is based on the students' answers to MOWEI. The analysis results obtained that MOWEI is a valid and reliable instrument to identify misconceptions. The results of the identification of misconceptions in participants found that the highest misconceptions occurred at number 10 that was 73% and the lowest misconceptions of 10% occurred at numbers 4 and 11.
Keywords: Multitier Open-ended Work and Energy Instrument (MOWEI), Rasch analysis, Javanese students' misconceptions
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