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All Journal SIGMA: Jurnal Pendidikan Matematika Union: Jurnal Ilmiah Pendidikan Matematika Jurnal Analisa Transformasi : Jurnal Pendidikan Matematika dan Matematika Gunung Djati Conference Series
Maryono, Iyon
Prodi Pendidikan Matematika, UIN Sunan Gunung Djati Bandung
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Characteristics of student errors in solving geometric proof problems based on Newman's theory Syifa Afidah Nurul Arifin; Iyon Maryono
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 11 No 3 (2023)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v11i3.15981

Abstract

This study aims to determine the characteristics of student errors in solving geometry proof based on Newman's Theory. The research method used is a qualitative research method with a phenomenographic approach. This research was conducted to prevent students from repeating mistakes in advanced geometry courses. The types of errors based on Newman's Theory used in this study are: (1) reading errors in the representation of mathematical symbols; (2) comprehension errors of the proof problem; (3) transformation errors of the proof problem; (4) process skills errors of the proof problem; and (5) encoding errors. The subjects of this study were 15 students, and the instruments used were interview guidelines and documentation. The results of this study are reading errors in the representation of mathematical symbols with an average of 15.81%, with error characteristics that students do not write geometry symbols according to the rules. Comprehension errors of the proof problem with an average of 4.78%. Transformation errors of the proof problem with an average of 26.84%. Process skill errors of proof problems with an average of 29.04%. Encoding errors with an average of 23.53%.
PENERAPAN MODEL PEMBELAJARAN PROJECT, ACTIVITY, COOPERATIVE, EXERCISE (PACE) UNTUK MENINGKATKAN PEMAHAMAN MATEMATIS DAN SELF-EFFICACY SISWA Yossi Amanda; Iyon Maryono; Riva Lesta Ariany
TRANSFORMASI Vol 9 No 2 (2025): TRANSFORMASI: Jurnal Pendidikan Matematika dan Matematika
Publisher : Program Studi Pendidikan Matematika FMIPA Universitas PGRI Banyuwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36526/tr.v9i2.6038

Abstract

The study aims to analyze the improvement of students’ mathematical understanding and self-efficacy after learning with the PACE model. This study used a quasi-experimental method, with a population of all students from ten eighth-grade students of a junior high school in Bandung in the 2024/2025 academic year. The sample was determined purposively by two classes. Data collection was carried out using test instruments and questionnaires. Data analysis used a t-test on test results and descriptive analysis on self-efficacy scores. The results showed that the improvement of mathematical understanding of students who received learning with the PACE model was better than students who learned in conventional classes. This can be seen from the N-Gain value in the experimental class of 0.304 (medium category) and the N-Gain in the control class of 0.124 (low category). The level of self-efficacy of students in the experimental class increased by 66.86 after learning with the PACE model. Thus, the PACE model is said to be effective in improving students’ mathematical understanding and self-efficacy. Further research is expected to identify the relationship between variables.
Co-Authors Abdul Rahman Sidik Maryono Adi Julianto Kusnadi Akhmad Nurul Mutamam Aulia Putri Timur Juariah Juariah Muhammad Tandhimul Haq Nuraida, Ida Nurul Hikmah Pebiyola Siti Wulandari R. Poppy Yaniawati Rahayu Kariadinata Rahayu, Yayu Nurhayati Rifa Rizqiyani Riva Lesta Ariany Rosi Oktaviani Saputri Siska Amanda Lucita Dewi Siti Rohimah Syaf, Agus Hikmat Syifa Afidah Nurul Arifin T. Tutut Widiastuti, A Wati Susilawati Yossi Amanda