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All Journal JTAM (Jurnal Teori dan Aplikasi Matematika) Kognitif: Jurnal Riset HOTS Pendidikan Matematika Mathematics Education Journal
Amarta, Nadiati
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Computer Science & IT Education Library & Information Science Mathematics Social Sciences Other

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Students' Numeracy Skills in Learning Cartesian Coordinate System Using PMRI in the Context of Palembang LRT Amarta, Nadiati; Putri, Ratu Ilma Indra; Zulkardi
Mathematics Education Journal Vol. 17 No. 3 (2023): Jurnal Pendidikan Matematika
Publisher : Universitas Sriwijaya in collaboration with Indonesian Mathematical Society (IndoMS)

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Abstract

This research aims to describe the numeracy skills of eighth grade students in learning Cartesian coordinate system using the approach of realistic mathematics education in the Indonesian context, or PMRI, by using Palembang Light Rail Transit (LRT) context. This research is a descriptive qualitative research and the research participants were students who belonged to class 8 of secondary school (SMPN) 59 Palembang. Tests and interviews with students were the data collection techniques used, and the written examination comprised two questions designed to measure the students' proficiency in mathematics. From the analysis and discussion of the students' responses, it was found that there were 11 high ability students (39.29%), eight middle ability students (52.14%), and nine low ability students (32.14%). Interviews were conducted to clarify the responses of the students. The interviews revealed that the main cause of the students' difficulties was a lack of concentration while attempting to answer the numeracy test questions. It is concluded that the students of SMPN 59 Palembang demonstrated adequate numerical skills in solving the test problems related to the Cartesian coordinate system using the PMRI approach in the context of Palembang LRT. DOI: https://doi.org/10.22342/jpm.17.3.20239.325-342
Pengembangan LKPD Materi Perbandingan Senilai Menggunakan Konteks Engrang untuk Siswa SMP Amarta, Nadiati; Darmawijoyo, Darmawijoyo; Hartono, Yusuf
Kognitif: Jurnal Riset HOTS Pendidikan Matematika Vol. 5 No. 3 (2025): July - September 2025
Publisher : Education and Talent Development Center Indonesia (ETDC Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51574/kognitif.v5i3.3507

Abstract

Kemampuan pemodelan matematika merupakan salah satu kompetensi penting dalam pembelajaran abad ke-21 karena membantu siswa menghubungkan konsep matematika dengan situasi nyata secara bermakna. Namun, sebagian besar siswa mengalami kesulitan dalam menerapkan konsep perbandingan senilai ke dalam konteks dunia nyata. Hal ini disebabkan karena pembelajaran matematika cenderung prosedural dan tidak dikaitkan dengan pengalaman konkret siswa. Oleh karena itu, penelitian ini bertujuan untuk mengembangkan Lembar Kerja Peserta Didik (LKPD) menggunakan konteks permainan engrang yang valid dan praktis guna mendukung kemampuan pemodelan matematika siswa pada materi perbandingan senilai. Penelitian ini menggunakan metode design research tipe development study dengan model Tessmer yang meliputi tahap preliminary dan formative evaluation. Subjek penelitian melibatkan tiga siswa dalam uji coba one-to-one dan enam siswa dalam uji coba small group. Instrument yang digunakan terdiri dari lembar validasi dan angket kepraktisan. Hasil validasi menunjukkan bahwa LKPD yang dikembangkan sangat valid ditinjau dari aspek konten, konstruk dan bahasa. Uji kepraktisan menunjukkan bahwa siswa dapat memahami isi LKPD dengan baik dan terlibat aktif dalam proses pemodelan matematika mulai dari memahami konteks, membangun model matematika, hingga menafsirkan hasil model. Hasil ini menunjukkan bahwa LKPD materi perbandingan senilai dengan menggunakan konteks permainan engrang dapat menjadi alternatif bahan ajar yang efektif dalam mendukung kemampuan pemodelan matematika siswa.
Effectiveness of Traditional Game-Based Learning: using Panjat Pinang Context to Improve Students’ Mathematical Modelling Skills Amarta, Nadiati; Darmawijoyo, Darmowijoyo; Hartono, Yusuf
JTAM (Jurnal Teori dan Aplikasi Matematika) Vol 9, No 4 (2025): October
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jtam.v9i4.32592

Abstract

This study aims to develop a context-based Learner Worsheet (LKPD) on comparison material using the traditional game of panjat pinang to enhance the mathematical modelling skills of seventh-grade junior high school. The research employed a design research approach with the Tessmer model, consisting of preliminary and formative evaluation stages. Instrument included expert validation sheets (to assess content, construct, and language), practicality questionnaires, and a mathematical modelling ability test (covering understanding tasks, mathematising, working mathematically, and explaining results). Data analysis involved calculating percentage scores for validity and practicality, along with descriptive analysis of students’ mathematical modelling performance. The results indicate that the LKPD achieved high validity with an average score of 84,77% and good practicality with an average score of 81,25%. Field testing demonstrated its potential to improve students’ performance in all four stages of mathematical modelling. In conclusion, integrating panjat pinang as a cultural context creates meaningful learning experiences, making the concept of comparison more accessible and engaging. The LKPD can serve as an effective alternative mathematics teaching material and a reference for developing other culturally relevant resources. 
Co-Authors Darmawijoyo, Darmawijoyo Darmawijoyo, Darmowijoyo Ratu Ilma Indra Putri Yusuf Hartono Zulkardi