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All Journal Mandalika Mathematics and Educations Journal Edumatica: Jurnal Pendidikan Matematika
Fikri, Darojatun
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Mathematics

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Effectiveness of Ethnomathematics-Based Geometry Learning Using Problem-Based Learning Assisted by Mobile Devices on Students’ Mathematical Disposition Fikri, Darojatun; Hartono
Mandalika Mathematics and Educations Journal Vol 7 No 4 (2025): Desember
Publisher : FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jm.v7i4.10567

Abstract

Abstract This article analyses the effectiveness of ethnomathematics-based geometry learning using a Problem-Based Learning (PBL) approach supported by mobile devices on junior high school students’ mathematical disposition. A quantitative approach with a pre-experimental one-group pretest–posttest design was employed in this study. The sample consisted of 30 eighth-grade students selected through a cluster random sampling technique from a public junior high school in Yogyakarta, Indonesia. The instrument used was a mathematical disposition questionnaire comprising 16 validated statements. Data were analysed descriptively and inferentially using the Shapiro–Wilk test, one-sample t-test, and one-population proportion test. The results revealed a significant improvement in students’ mathematical disposition after implementing ethnomathematics-based geometry learning through the PBL approach assisted by mobile devices. The average questionnaire score increased from 48 (poor category) to 59 (good category), with 90% of students achieving or exceeding the good category threshold. These findings indicate that integrating ethnomathematics into problem-solving activities facilitated by mobile technology can foster students’ confidence, persistence, interest, and comfort in discussing and learning mathematics. Keywords:Ethnomathematics; Mobile; Mathematical Disposition; Problem-Based Learning
The Effectiveness of Website-Assisted Ethnomathematics-Based RME on Junior High School Students’ Understanding of Mathematics Fikri, Darojatun; Hartono, Hartono; Arliani, Elly
Edumatica : Jurnal Pendidikan Matematika Vol 15 No 3 (2025): Edumatica: Jurnal Pendidikan matematika (Desember 2025)
Publisher : Department of Mathematics Education, Faculty of Teacher Training and Education, Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/edumatica.v15i3.47672

Abstract

This study examines the effectiveness of Realistic Mathematics Education, also supported by a website based on ethnomathematics, on the understanding of math concepts among junior high school students. The research method used in this study is quantitative research with a pre-experimental design, one-group pretest-posttest. The sample in the study was 29 students, which was taken from the 8th-grade students of a junior high school in Yogyakarta, picked through cluster random sampling. This study’s instruments were essay tests, which had been validated and proven reliable. The data from the research were analysed by descriptive and inferential statistics, where the inferential statistics included the Normality Shapiro-Wilk test and the One-Sample T-Test. The results indicated a significant improvement in students' understanding of math concepts after using RME through ethnomathematics-based website reach a significant change. This is evidenced by the posttest average value of 82.228, which is far more significant than the Minimum Mastery Criteria value of 75, and 79.31% of the students achieved and exceeded it. These results suggest that including local cultural contexts, batik motifs, and the Borobudur Temple structures in students’ learning process can enhance the students’ conceptual achievement level by strengthening the relationship with the learning process in their daily lives.
Co-Authors Elly Arliani Hartono Hartono Hartono Hartono