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All Journal Jurnal Gantang Journal of Instructional and Development Researches Mathematics Education Journal Jurnal VARIDIKA
Wulandari, Trisna
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Education Languange, Linguistic, Communication & Media Mathematics Other

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Journal : Jurnal Gantang

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Analisis Komparatif Penyajian Buku Teks Matematika Indonesia dan India Materi Lingkaran untuk Sekolah Tingkat Menengah Wulandari, Trisna; Hiltrimartin, Cecil; Susanti, Ely
Jurnal Gantang Vol 10 No 1 (2025): Jurnal Gantang
Publisher : Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31629/jg.v10i1.7170

Abstract

Students' understanding of the concept of circles is still low, which can be influenced by differences in presentation in textbooks between countries and curriculum. Therefore, this study aimed to analyze by comparing the material and questions on the topic of circles in Indonesian and Indian mathematics textbooks in terms of facts, concepts, principles, cognitive levels, PISA framework, and problem-solving questions. This study was conducted using a descriptive-comparative method with a qualitative approach. The objects of this study were Indonesian mathematics textbooks Merdeka Curriculum for grade XI and Curriculum 2013 for grade VIII, as well as Indian mathematics textbooks for grade X. The results showed that the three books had different focuses in delivering the material. Indian books emphasized formal proofs and geometric visualizations and included exploratory activities based on practice. Indonesian books, Curriculum 2013, focused more on contextual activities and gradual discovery of concepts, while Merdeka Curriculum books emphasized conceptual understanding through an exploratory and reflective approach. The questions in the Merdeka Curriculum book are more cognitively diverse, in line with the PISA framework and Polya's problem-solving stages. This finding is essential for developing adaptive textbooks that support higher-order thinking and 21st-century mathematical literacy.
The effect of PMRI assisted by augmented reality on circle for students’ problem-solving ability Wulandari, Trisna; Susanti, Ely; Hiltrimartin, Cecil
Jurnal Gantang Vol 10 No 2 (2025): Jurnal Gantang
Publisher : Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31629/7mjbm154

Abstract

Mathematical problem-solving ability among students remains low in conventional learning environments. The integration of Augmented Reality (AR) into the Indonesian Realistic Mathematics Education (PMRI) approach facilitates visualization of abstract concepts and promotes contextual learning. This study analyzes the effect of PMRI-based circle learning assisted by AR on students' problem-solving abilities. A quantitative approach was employed using a One Group Pretest pretest-posttest design with 35 eleventh-grade students from SMA Srijaya Negara Palembang. Data were collected through a mathematical problem-solving test based on Polya's four stages: understanding the problem, devising a plan, carrying out the plan, and looking back, administered before and after the intervention. The Shapiro–Wilk test indicated that the data were normally distributed (pretest = 0.084; posttest = 0.309, both > 0.05). Paired sample t-test analysis revealed a pretest mean score of 19.37 and a posttest mean score of 66.51, with a mean difference of 47.14. The t-test result (t = -23.053, Sig. (2-tailed) < 0.001) indicated a significant difference between pretest and posttest scores. These findings demonstrate that the PMRI-based learning design assisted by AR is effective in improving students' problem-solving abilities through contextual learning experiences and interactive visualization. The results suggest that integrating PMRI with Augmented Reality in circle learning represents an effective instructional innovation for enhancing students' problem-solving abilities.
Co-Authors Cecil Hiltrimartin Darmawijoyo, Darmawijoyo Ely Susanti Firsta, Risa Rahmatia Hapizah Indaryanti Indaryanti Isrok’atun Simarmata, Ruth Helen Yusuf Hartono