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Contact Name
Nur Wahidin Ashari
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nurwahidin_pmath@uncp.ac.id
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nurwahidin_pmath@uncp.ac.id
Editorial Address
Jalan Latammacelling No. 9 B Kota Palopo
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INDONESIA
Proximal: Jurnal Penelitian Matematika dan Pendidikan Matematika
ISSN : 26158132     EISSN : 26157667     DOI : 10.30605/proximal
Core Subject : Education,
Proximal publishes research results, literature studies, and scientific papers on mathematics and mathematics education. Published scientific studies include Mathematics Teaching, Development of Mathematics Education, Mathematical Sciences, Applied Mathematics, Actuarial Mathematics, and related fields.
Articles 775 Documents
Pengaruh Adversity Quotient dan Kepercayaan Diri Terhadap Kemampuan Literasi Matematika Siswa SMP Alrohma Nikmawati Triasroza; Davi Apriandi; Ika Krisdiana
Proximal: Jurnal Penelitian Matematika dan Pendidikan Matematika Vol. 9 No. 3 (2026): Volume 9 Nomor 3 Tahun 2026
Publisher : Universitas Cokroaminoto Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30605/proximal.v9i3.9585

Abstract

Adversity Quotient (AQ) and self-confidence are assumed to contribute to students’ mathematical literacy, but empirical evidence supporting this assumption in Indonesian junior high schools remains limited. This study aimed to examine whether AQ and self-confidence predict the mathematical literacy of eighth-grade students at SMPN 1 Wonoasri (n = 152), both partially and simultaneously, using a quantitative ex post facto design. Data were collected through a 12-item AQ questionnaire (α = 0.789), a 17-item self-confidence questionnaire (α = 0.885), and a three-item open-ended mathematical literacy test (α = 0.817) based on the three PISA processes: formulate, employ, and interpret. Data were analyzed using multiple linear regression in JASP 0.17.3 after testing the classical regression assumptions. The results showed that neither AQ (β = 0.140; p = 0.180) nor self-confidence (β = 0.008; p = 0.937) significantly predicted mathematical literacy, either partially or simultaneously (F(2, 149) = 1.605; p = 0.204; adjusted R² = 0.008). The two variables explained only 0.8% of the variance in mathematical literacy. Despite students’ relatively high AQ and self-confidence levels, neither variable demonstrated significant predictive power. These findings suggest the need to investigate cognitive and external factors, such as conceptual mastery and instructional quality, to better understand students’ mathematical literacy.
Lipschitz Based Polynomial Interpolation for Stable Incomplete Data Reconstruction M. Husen Al Farisy; M. Ivan Ariful Fathoni; Salma Ari Nastiti
Proximal: Jurnal Penelitian Matematika dan Pendidikan Matematika Vol. 9 No. 3 (2026): Volume 9 Nomor 3 Tahun 2026
Publisher : Universitas Cokroaminoto Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30605/proximal.v9i3.9607

Abstract

Incomplete data reconstruction may experience excessive fluctuations when the available observations become sparse or irregular and are contaminated by noise, making global polynomial interpolation sensitive to local variations. This study proposes a Lipschitz-based polynomial interpolation approach that combines classical Lagrange interpolation with a gradient-limiting mechanism, which constrains local changes between consecutive points within a prescribed Lipschitz bound. Unlike reconstruction approaches based on optimization or iterative regularization, the proposed mechanism is applied as a simple post-interpolation stabilization process without requiring model training or repeated optimization. The method was evaluated using synthetic nonlinear data with Gaussian noise under missing-data rates of 30%, 40%, and 50%. The results reveal a trade-off between reconstruction accuracy and smoothness. While classical interpolation achieved lower RMSE and MAE values, the Lipschitz-based method produced lower Total Variation (TV) values in most scenarios. These results indicate that gradient limiting effectively controls local fluctuations and produces smoother reconstructions at the expense of reduced pointwise accuracy. Therefore, the proposed approach provides a simple and interpretable stabilization mechanism for incomplete and noisy data reconstruction when oscillation control is a primary concern.
Optimization of Red Chili Delivery Routes From Production Centers to Market to Minimize Distances with the Modified Distribution (MODI) Method Rico Pradana Dita; Rima Aprilia
Proximal: Jurnal Penelitian Matematika dan Pendidikan Matematika Vol. 9 No. 3 (2026): Volume 9 Nomor 3 Tahun 2026
Publisher : Universitas Cokroaminoto Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30605/proximal.v9i3.9705

Abstract

The distribution of red chili from the production center to the market faces the problem of determining efficient routes due to differences in distance, supply capacity, and market needs. This study aims to form a transportation model and determine a delivery pattern of red chili that can meet all market demand while minimizing the total distribution distance as the objective function. The research data came from Tanjung Kubah, Sukaramai, and Aras villages as well as four destination markets, namely Indrapura, Air Putih, Simpang Dolok, and Pagurawan. The approach used was a transportation model with the North West Corner (NWC) method to obtain an initial solution and the Modified Distribution Method (MODI) to test and improve optimality. The total supply and total demand was 20,000 kg each so that the model was in a balanced condition. The calculation results in the thesis show that the initial NWC solution has a value of 222,000, while the results of the first iteration of MODI are stated to be 214,000, with a saving of 8,000. All opportunity cost values in the final result are declared positive or equal to zero, so the solution is considered optimal. The optimal allocation pattern reported is Tanjung Kubah to Indrapura 6,000 kg, Tanjung Kubah to Air Putih 2,000 kg, Sukaramai to Air Putih 3,000 kg, Sukaramai to Simpang Dolok 4,000 kg, and Aras to Pagurawan 5,000 kg. These findings show that MODI can be used as a data-driven approach to help with red chili distribution planning.
Pengembangan Modul Matematika Berbasis Problem-Based Learning pada Materi SPLDV Annisa Ul Khoiriah; Ella Andhany
Proximal: Jurnal Penelitian Matematika dan Pendidikan Matematika Vol. 9 No. 3 (2026): Volume 9 Nomor 3 Tahun 2026
Publisher : Universitas Cokroaminoto Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30605/proximal.v9i3.9752

Abstract

Learning systems of linear equations in two variables in vocational high schools requires contextual teaching materials that help students engage in mathematical modeling and problem solving. Teaching materials at SMK Negeri 1 Arse do not provide sufficient learning stages to support student engagement and independence. This study aimed to develop a mathematics module based on Problem-Based Learning (PBL) for this topic and assess its validity, practicality, and students’ learning achievement after implementation. The study employed a research and development method using the ADDIE model, comprising analysis, design, development, implementation, and evaluation. A limited trial was conducted in May–June 2026 involving 23 tenth-grade students, one mathematics teacher, and one mathematics education lecturer as a validator. Data were collected through observations, interviews, validation sheets, teacher and student response questionnaires, a prerequisite diagnostic test, a posttest on systems of linear equations in two variables, and documentation. Quantitative and qualitative data were analyzed descriptively. The validity assessment yielded 90.63%, categorized as highly valid. Practicality was assessed using teacher and student response questionnaires, yielding 84.00% and 95.56%, respectively, both categorized as highly practical. The mean posttest score was 94.46, with all students meeting the mastery threshold of 70. The module met validity and practicality criteria in this limited trial. Learning achievement was descriptive; further effectiveness testing requires a comparison group and equivalent pretests and posttests, while validity assessment needs additional validators
Pengaruh Pendekatan Realistic Mathematics Education Terhadap Kemampuan Berpikir Kritis Matematis Siswa Ditinjau Berdasarkan Gaya Belajar Nurrillahi Piningit; Astuti; Adityawarman Hidayat
Proximal: Jurnal Penelitian Matematika dan Pendidikan Matematika Vol. 9 No. 3 (2026): Volume 9 Nomor 3 Tahun 2026
Publisher : Universitas Cokroaminoto Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30605/proximal.v9i3.9748

Abstract

Rendahnya kemampuan berpikir kritis matematis siswa serta perlunya pendekatan pembelajaran yang mengaitkan matematika dengan konteks kehidupan nyata melatarbelakangi penelitian ini. Penelitian ini bertujuan untuk mengetahui pengaruh pendekatan Realistic Mathematics Education (RME) dan gaya belajar (visual, auditori, kinestetik) terhadap kemampuan berpikir kritis matematis siswa, serta interaksi antara keduanya. Penelitian menggunakan pendekatan kuantitatif dengan metode eksperimen desain faktorial pada 72 siswa kelas X SMK Negeri 1 tahun ajaran 2026, yang dibagi menjadi 36 siswa kelas eksperimen (pendekatan RME) dan 36 siswa kelas kontrol (pembelajaran konvensional) pada materi eksponen, dengan teknik purposive sampling. Data dikumpulkan melalui tes uraian yang telah divalidasi dan dianalisis menggunakan ANAVA dua jalur. Hasil penelitian menunjukkan pendekatan RME berpengaruh signifikan terhadap kemampuan berpikir kritis matematis siswa (Fhitung = 33,033 > Ftabel = 3,986; sig. = 0,000), dengan rata-rata posttest kelas eksperimen (89,86) lebih tinggi daripada kelas kontrol (81,42); gaya belajar juga berpengaruh signifikan (Fhitung = 3,338 > Ftabel = 3,136; sig. = 0,014), dengan siswa bergaya belajar visual meraih capaian tertinggi, namun tidak terdapat interaksi signifikan antara keduanya (Fhitung = 0,002 < Ftabel = 3,136), yang menunjukkan pengaruh pendekatan pembelajaran bersifat konsisten pada semua gaya belajar. Dapat disimpulkan bahwa pendekatan RME efektif dan konsisten meningkatkan kemampuan berpikir kritis matematis siswa pada berbagai gaya belajar.
Pengaruh Model Missouri Mathematics Project (MMP) Terhadap Kemampuan Penalaran Matematis Syanti Gustari; Kasman Ediputra; Molli Wahyuni
Proximal: Jurnal Penelitian Matematika dan Pendidikan Matematika Vol. 9 No. 3 (2026): Volume 9 Nomor 3 Tahun 2026
Publisher : Universitas Cokroaminoto Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30605/proximal.v9i3.9757

Abstract

Kemampuan penalaran matematis peserta didik di kelas X TJKT di SMK Negeri 1 Bangkinang masih rendah, sebagian besar disebabkan oleh pembelajaran yang cenderung berpusat pada guru. Penelitian ini bertujuan menguji pengaruh model Missouri Mathematics Project berbantuan media Blooket terhadap kemampuan penalaran matematis siswa pada materi eksponen dan bentuk akar. Pendekatan yang digunakan Adalah kuasi eksperimen dengan rancangan non equivalent control group design. Seluruh populasi yaitu 72 siswa, dijadikan sampel melalui Teknik sampling jenuh, terbagi menjadi kelas eksperimen 36 siswa yang diajar dengan model MMP dan kelas control 36 siswa yang diajar secara konvensional. Data dikumpulkan menggunakan tes esai kemampuan penalaran matematis yang telah teruji valid dan reliabel. Setelah data dipastikan berdistribusi normal dan homogen, hipotesis diuji menggunakan Independent Sample T-Test. Hasil menunjukkan skor rata-rata posttest kelas eksperimen meningkat dari 27,36 menjadi 85,69, sedangkan kelas kontrrol hanya meningkat dari 26,36 menjadi 61,81, dengan nilai signifikan 2-tailed sebesar 0,000 (<0,05) sehingga H0 ditolak dan H1 diterima. Temuan ini membuktikan bahwa model MMP berpengaruh siginifikan terhadap peningkatan kemampuan penalaran matematis siswa SMK.
Pengaruh Model Pembelajaran Kooperatif Tipe Think Talk Write (TTW) Berbasis Media Papan Bastik Terhadap Kemampuan Pemahaman Konsep Matematis Siswa Aura Shalsabila; Adityawarman Hidayat; Zulhendri
Proximal: Jurnal Penelitian Matematika dan Pendidikan Matematika Vol. 9 No. 3 (2026): Volume 9 Nomor 3 Tahun 2026
Publisher : Universitas Cokroaminoto Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30605/proximal.v9i3.9764

Abstract

Pemahaman konsep matematis merupakan kemampuan yang penting dalam pembelajaran matematika, tetapi siswa masih memerlukan pembelajaran yang mendorong proses berpikir, komunikasi, dan representasi konsep secara aktif. Penelitian ini bertujuan untuk mengetahui pengaruh model pembelajaran kooperatif tipe Think Talk Write (TTW) berbasis media Papan Bastik terhadap kemampuan pemahaman konsep matematis siswa. Penelitian ini menggunakan pendekatan kuantitatif dengan metode quasi experiment dan desain Non-equivalent Control Group. Sampel penelitian terdiri dari 62 siswa kelas X TBSM SMK Negeri 1 Bangkinang, yaitu 31 siswa kelas eksperimen yang memperoleh pembelajaran dengan model TTW berbasis media Papan Bastik dan 31 siswa kelas kontrol yang memperoleh pembelajaran konvensional. Pengumpulan data dilakukan menggunakan tes uraian berupa pretest dan posttest yang telah diuji validitas, reliabilitas, tingkat kesukaran, dan daya pembeda. Data dianalisis menggunakan uji normalitas Shapiro-Wilk, uji homogenitas Levene, uji hipotesis Independent Samples t-test, dan uji effect size Cohen's d dengan bantuan program SPSS. Hasil penelitian menunjukkan bahwa rata-rata posttest kelas eksperimen sebesar 74,39 lebih tinggi dibandingkan kelas kontrol sebesar 46,90, dengan selisih 27,48 poin. Selisih tersebut signifikan secara statistik berdasarkan uji Independent Samples t-test (t = 23,917; Sig. (2-tailed) = 0,000 < 0,05), sehingga H0 ditolak dan Ha diterima. Besar pengaruh yang dihasilkan tergolong sangat besar (Cohen's d = 6,075), meskipun nilai tersebut perlu ditafsirkan secara hati-hati karena simpangan baku posttest kedua kelompok kecil. Dengan demikian, dapat disimpulkan bahwa terdapat pengaruh yang signifikan dari model pembelajaran kooperatif tipe Think Talk Write (TTW) berbasis media Papan Bastik terhadap kemampuan pemahaman konsep matematis siswa kelas X SMK.
Evaluation of ARKAS Implementation in Financial Administration at Kindergartens in Tallo District, Makassar City, Using the CIPP Model Sucianti Sucianti; Rahman Pura; Yudi Ahmad Sadeli
Proximal: Jurnal Penelitian Matematika dan Pendidikan Matematika Vol. 9 No. 3 (2026): Volume 9 Nomor 3 Tahun 2026
Publisher : Universitas Cokroaminoto Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30605/proximal.v9i3.9776

Abstract

Aplikasi Rencana Kegiatan dan Anggaran Sekolah (ARKAS) diwajibkan bagi satuan pendidikan penerima dana bantuan operasional untuk mendukung akuntabilitas dan transparansi keuangan. Namun, implementasinya pada taman kanak-kanak (TK) dengan keterbatasan tenaga administrasi belum banyak dievaluasi. Penelitian ini bertujuan mengevaluasi implementasi ARKAS berdasarkan dimensi konteks, input, proses, dan produk (CIPP) pada empat TK di Kecamatan Tallo, Kota Makassar. Data dikumpulkan pada Juli 2026 melalui wawancara semi-terstruktur dengan empat kepala sekolah, observasi, dan studi dokumentasi. Analisis data meliputi kondensasi data, penyajian data, serta penarikan dan verifikasi kesimpulan. Keabsahan data diperiksa melalui triangulasi sumber dan teknik. Hasil menunjukkan bahwa implementasi ARKAS berjalan cukup efektif meskipun kepala sekolah merangkap sebagai bendahara, operator, dan tenaga administrasi. Pemahaman kebijakan diperoleh melalui belajar mandiri akibat terbatasnya sosialisasi resmi, sedangkan kesiapan sumber daya manusia menjadi kendala utama. Ketiadaan pemisahan fungsi diatasi melalui mekanisme pengawasan pengganti. ARKAS mendukung pemenuhan kebutuhan pembelajaran dan fasilitas, meskipun ketertiban administrasi bervariasi antarsekolah. Keberhasilan implementasi lebih bergantung pada adaptasi individual kepala sekolah daripada dukungan struktural. Oleh karena itu, diperlukan penguatan sosialisasi, pendampingan, dan dukungan tenaga administrasi.
Principal Component–Truncated Spline Regression Modeling of Population Welfare in South Sulawesi Irwan Thaha; Ayu Rahayu; Nur Fadilah; Fettyana Fettyana
Proximal: Jurnal Penelitian Matematika dan Pendidikan Matematika Vol. 9 No. 4 (2026): Volume 9 Nomor 4 Tahun 2026
Publisher : Universitas Cokroaminoto Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30605/proximal.v9i4.9790

Abstract

Population welfare modeling with socioeconomic predictors faces two problems: multicollinearity and an unknown functional form. This study combines Principal Component Analysis (PCA) with nonparametric truncated spline regression to model the Human Development Index (HDI), used as a proxy for the human development dimension of population welfare, across the 24 regencies/cities of South Sulawesi in 2024, using six predictors: population density, number of poor people, labor force size, real per-capita expenditure, life expectancy, and mean years of schooling. The KMO measure (0.591) and Bartlett's test (χ² = 97.72; p < .001) supported dimension reduction, and two components with eigenvalues > 1 were retained (78.83% of variance). The polynomial order (m = 1, 2, 3), number of knots per component (r = 1, 2, 3), and knot locations were selected jointly by minimizing Generalized Cross-Validation (GCV), with knots searched exhaustively within the 15th–85th percentile range of each component. The optimal model, a linear truncated spline with two knots per component (GCV = 0.453), achieved R² = 0.9836 and AIC = 46.54, outperforming linear principal component regression (R² = 0.9571; AIC = 61.59); its leave-one-out cross-validated R² was 0.9625. The first component, a development-scale dimension, has an increasing effect over three segments (slopes 1.80, 4.22, and 1.43); the second, contrasting poverty–labor pressure with human-capital quality, decreases overall with a local slope change between two closely spaced knots. The estimated knots group regencies/cities into segments with different marginal associations with the HDI, offering an empirical basis for prioritizing regional development.
Pengaruh Penerapan Geogebra Terhadap Kemampuan Berpikir Kritis Siswa pada Pembelajaran Bangun Ruang Sisi Datar Nurwati Djam&#039;an; Hamda; Musyawir
Proximal: Jurnal Penelitian Matematika dan Pendidikan Matematika Vol. 9 No. 4 (2026): Volume 9 Nomor 4 Tahun 2026
Publisher : Universitas Cokroaminoto Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30605/proximal.v9i4.9802

Abstract

Penelitian ini bertujuan untuk menginvestigasi pengaruh penerapan aplikasi GeoGebra terhadap kemampuan berpikir kritis siswa dalam pembelajaran geometri bangun ruang di SMP Negeri 27 Makassar. Penelitian menggunakan metode pre-eksperimental dengan desain one-group pretest–posttest. Populasi penelitian mencakup seluruh siswa kelas VIII yang terbagi dalam 11 kelas. Satu kelas dipilih secara acak melalui teknik cluster random sampling, yaitu kelas VIII-8, yang terdiri atas 25 siswa. Data dikumpulkan melalui tes kemampuan berpikir kritis dengan rentang skor 0–100, angket respons siswa, dan lembar observasi aktivitas belajar. Rata-rata skor tes meningkat dari 17,56 pada pretest menjadi 78,04 pada posttest. Rata-rata N-gain sebesar 0,74 termasuk kategori tinggi berdasarkan kriteria yang digunakan dalam penelitian. Uji Wilcoxon Signed-Rank menunjukkan perbedaan yang signifikan antara skor pretest dan posttest (p < 0,05). Secara terpisah, respons siswa mencapai 78,13% (kategori baik), sedangkan aktivitas belajar mencapai 73,24% (kategori aktif). Temuan ini menunjukkan adanya peningkatan kemampuan berpikir kritis setelah pembelajaran menggunakan GeoGebra, disertai respons siswa yang baik dan aktivitas belajar yang aktif.