Tia Purniati, Turmudi, Maya Evayanti, Didi Suhaedi
This study aims to analyze the instruments and abilities of students on material number patterns using the Rasch model. The instrument was tested on 29 8th grade junior high school students consisting of 15 female students and 14 male students. Instrument analysis and student ability using the Rasch model based on instrument difficulty (item measure), student ability level (person measure), Wright map (person-item map), and instrument analysis. The results showed that there was one difficult question, six medium questions, and one easy question. In addition, there were five students with high abilities, sixteen students with medium abilities, and eight students with low abilities. The level of difficulty of the diversity instruments is not far adrift, but the level of student ability varies. The interaction between students and instruments as a whole is bad. The consistency of answers from students is weak, but the quality of the instrument is sufficient. Copyright © 2020 EAI
Departemen Pendidikan Matematika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung, 40154, Indonesia; SMP Laboratorium Percontohan, UPI, Jl. Dr. Setiabudi No. 229, Bandung, 40154, Indonesia; Program Studi Matematika, Universitas Islam Bandung, Jl. Tamansari No. 1, Bandung, 40116, Indonesia
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