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All Journal Jurnal Multidisiplin Sahombu Jurnal Pendidikan Indonesia (Ju-Pendi)
Nurhidayat, Arif
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Arts Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Other

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The Relevance of Numbered Heads Together Learning Model to Students' Mathematical Communication Ability Based on Vygotsky's Theory Nurhidayat, Arif
Jurnal Pendidikan Indonesia Vol. 1 No. 01 (2022): Jurnal Pendidikan Indonesia (Ju-Pendi), Desember 2022
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/ju-pendi.v1i01.52

Abstract

Numbered Heads Together learning model is a cooperative learning model that aims to improve collaborative mathematical understanding. Mathematical communication ability is the ability to convey ideas or mathematical understanding. NHT can be applied in mathematics learning activities on campus to improve students' mathematical communication skills and is relevant or in accordance with Vygotsky's learning theory which emphasizes collaboration in learning activities. The results of the collaboration of the NHT learning model can improve students' mathematical communication skills because there is a process of social interaction and exchange of ideas in the learning model
Evaluation of Instruments on Online Self-Directed Learning Methods in Secondary Schools Using the Rasch Model Nurhidayat, Arif
Jurnal Multidisiplin Sahombu Vol. 5 No. 08 (2025): Jurnal Multidisiplin Sahombu, December (2025)
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Online learning requires students to possess strong self-directed learning abilities to ensure that the learning process remains effective. To ensure the accurate measurement of these abilities, an evaluation instrument with sound measurement quality is essential. This study aims to analyze the validity and reliability of the Self-Directed Online Learning instrument among secondary school students using the Rasch Model. The study employed a descriptive quantitative approach involving 757 secondary school students as respondents. The research instrument was the Self-Directed Online Learning Scale (SDOLS), consisting of 17 items measured on a five-point Likert scale. Data analysis was conducted using the Rasch Model with the assistance of Winsteps software. The results indicate that 15 items met the validity criteria based on the Outfit Mean Square (MNSQ) values, while 2 items did not meet the required criteria. Reliability analysis shows that the instrument demonstrates adequate reliability, while respondent reliability falls into the good category. These findings suggest that the Self-Directed Online Learning instrument is appropriate for measuring students’ self-directed learning in online learning at the secondary school level, although refinement of several items that do not meet the criteria is recommended.
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