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All Journal JURNAL EDUCATION AND DEVELOPMENT Journal of Innovative and Creativity Jurnal Matematika Ilmiah Universitas Muhammadiyah Kuningan
Suhardiman Darson Tamu
Universitas Muhammadiyah Gorontalo
Agriculture, Biological Sciences & Forestry Arts Humanities Computer Science & IT Education Languange, Linguistic, Communication & Media Mathematics Social Sciences Other

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Strategi Algoritmik Sistematis untuk Pemecahan Masalah Jarak dan Sudut pada Materi Dimensi Tiga: Strategi Algoritmik Sistematis untuk Pemecahan Masalah Jarak dan Sudut pada Materi Dimensi Tiga Suhardiman Darson Tamu; Nosva Adam Yunus; Febiyanti R. Hasan
Journal of Innovative and Creativity Vol. 5 No. 3 (2025)
Publisher : Fakultas Ilmu Pendidikan Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joecy.v5i3.4595

Abstract

Three-dimensional material, particularly the topic of distance and angles between geometric elements, is one of the most difficult parts for high school students because it requires high visualization and spatial reasoning skills. This study aims to develop a systematic algorithmic strategy to solve distance and angle problems in three-dimensional space in a more structured and student-friendly manner. The research approach used is qualitative-descriptive with analysis of textbooks, curriculum documents, and empirical experiences in teaching spatial geometry. The results of the study produced two main algorithms, namely the distance algorithm and the angle algorithm, each of which is arranged in logical steps starting from translating the problem into a drawing, identifying auxiliary triangles, analyzing the types of triangles, to applying relevant trigonometric theorems such as Pythagoras and the cosine rule. This strategy has been proven to strengthen the connection between students' conceptual understanding and procedural skills in solving problems. The systematic application of algorithms helps students build spatial visualization skills, improve thinking efficiency, and foster algorithmic thinking patterns in mathematics learning.
the Analysis of the Creativity Level of Mathematics Education Students in Basic Statistics Courses: Analisis Tingkat Kreativitas Mahasiswa Pendidikan Matematika pada Mata Kuliah Statistika Dasar Nosva Adam Yunus; Suhardiman Darson Tamu; Febiyanti R. Hasan
Journal of Innovative and Creativity Vol. 5 No. 3 (2025)
Publisher : Fakultas Ilmu Pendidikan Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joecy.v5i3.4602

Abstract

This study aims to analyze the creativity level of Mathematics Education students at Muhammadiyah University Gorontalo in the Basic Statistics course. Creativity is understood as the ability to think divergently, which plays a role in mastering mathematical concepts and applying ideas in real contexts. The method used is a descriptive quantitative approach with a sample of 13 students selected purposively. Data were obtained through a creativity questionnaire based on Torrance's four indicators, namely fluency, flexibility, originality, and elaboration. The instrument used a 1–5 Likert scale, with categories: 1 = strongly disagree, 2 = disagree, 3 = unsure, 4 = agree, and 5 = strongly agree. The data were analyzed using descriptive statistics and the Kolmogorov–Smirnov and Shapiro–Wilk normality tests with the help of SPSS 26. The results showed that 2 students (15.4%) were in the low category, 7 students (53.8%) were in the medium category, and 4 students (30.8%) were in the high category with an average of 58.1%. The Kolmogorov–Smirnov significance value was 0.093 and the Shapiro–Wilk value was 0.238 (> 0.05), indicating that the data were normally distributed. These findings confirm that student creativity is in the moderate category and needs to be improved, especially in terms of flexibility of thinking and originality.
A Development of STEM-Based E-Modules Integrated with Project-Based Learning (PjBL) to Improve Mathematical Reasoning and Creativity in Students at SMP Negeri 1 Telaga, Gorontalo Regency: STEM, project-based learning, mathematical reasoning, creativity, Test instruments, e-modules, Nosva Adam Yunus; Febiyanti R. Hasan; Suhardiman Darson Tamu; Zulfami Mustapa R
Journal of Innovative and Creativity Vol. 5 No. 3 (2025)
Publisher : Fakultas Ilmu Pendidikan Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joecy.v5i3.6220

Abstract

This study aims to develop and test the validity of pretest and posttest instruments for measuring students' mathematical reasoning and creativity in the development of STEM-based e-modules integrated with the Project-Based Learning (PjBL) model. Mathematical reasoning and creativity are considered higher-order thinking skills that are important in understanding mathematical concepts and solving contextual problems. The research was conducted at SMP Negeri 1 Telaga, Gorontalo Regency, using the ADDIE Research and Development (R&D) model, which was limited to the analysis, design, and instrument development stages. The research instruments were pretest and posttest tests of students' mathematical reasoning and creativity, which were compiled based on competency indicators and mathematical thinking ability indicators. The instruments were validated by subject matter experts and education practitioners using a Likert scale. Data analysis techniques used content validity analysis to determine the level of instrument feasibility. The results showed that the developed pretest and posttest instruments were highly valid and feasible for measuring students' mathematical reasoning and creativity. These findings form the basis for conducting practicality and effectiveness tests of the STEM-PjBL-based mathematics e-module in the next stage of research.
ESTIMASI NILAI π BERBASIS PENDEKATAN GEOMETRI DENGAN MENGHITUNG LUAS DAN KELILING POLIGON BERATURAN Suhardiman Darson Tamu; Ricki Yuliardi
JUMLAHKU: Jurnal Matematika Ilmiah STKIP Muhammadiyah Kuningan Vol 11 No 1 (2025): JUMLAHKU VOL.11 NO.1 2025
Publisher : Program Studi Pendidikan Matematika Universitas Muhammadiyah Kuningan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33222/jumlahku.v11i1.4703

Abstract

Penelitian ini bertujuan untuk menawarkan perspektif baru dalam eksplorasi nilai konstanta matematika π melalui studi analitis estimasi nilainya. Pendekatan yang digunakan adalah perhitungan luas dan keliling poligon beraturan yang didasarkan pada rumus luas segitiga dan aturan kosinus. Nilai π yang diperoleh dari perhitungan poligon dibandingkan dengan nilai π yang umum dikenal hingga delapan digit desimal (3,14159265). Hasil penelitian menunjukkan bahwa meskipun jari-jari lingkaran divariasikan, nilai konstanta yang dihasilkan dari perhitungan luas poligon bersegi 71094 identik dengan nilai π hingga delapan digit desimal. Sementara itu, perhitungan keliling poligon bersegi 25406 juga menghasilkan nilai konstanta yang identik dengan nilai π hingga delapan digit desimal (3,14159265). Namun, untuk perhitungan keliling poligon bersisi 71094 menghasilkan nilai konstanta dengan perbedaan satu digit desimal terakhir (3,14159266). Studi ini memberikan wawasan mengenai konvergensi nilai π melalui pendekatan geometris poligon beraturan.
STUDENTS’ THINKING PROCESSES IN INVERSE PROPORTION PROBLEM SOLVING Maulidina Basalama; Nur’ain S. Patilima; Nur Elina Karim; Hikmahturrahman Hikmahturrahman; Zulfahmi Mustapa R; Suhardiman Darson Tamu; Febiyanti R. Hasan
Jurnal Education and Development Vol 14 No 2 (2026): Vol 14 No 2 Mei 2026
Publisher : Institut Pendidikan Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37081/ed.v14i2.8460

Abstract

This study describes students’ thinking processes in solving inverse proportion problems based on mathematical ability. The study employed a qualitative descriptive design involving three students categorized as having high, moderate, and low mathematical ability. Data were collected through a written inverse proportion task and task-based interviews organized according to four problem-solving stages: understanding the problem, devising a plan, carrying out the plan, and looking back. The task asked students to determine the completion time when 20 workers who could finish a job in 30 days were increased to 50 workers. The results showed that the high-ability student recognized the inverse relation, used the constant-product model 20 × 30 = 50 × x, obtained 12 days, and verified the answer. The moderate-ability student treated the situation as direct proportion by writing 20 : 50 = 30 : x, indicating relational misconception. The low-ability student recognized the inverse relation but had difficulty with multiplication and division and did not check the answer. The findings imply that inverse proportion instruction should emphasize contextual relations, strategy selection, computational fluency, and reflective checking.
PLP I CALON GURU MATEMATIKA BERBASIS PEMBELAJARAN MENDALAM DI BOARDING SCHOOL Maulidina Basalama; Nur’ain S. Patilima; Nur Elina Karim; Nurhayati R. Napu; Nur Rahmatia R. Napu; Moh. Fajar Adam Yunus; Hikmahturrahman Hikmahturrahman; Febiyanti R. Hasan; Suhardiman Darson Tamu; Rahmi Nindi Arsyad
Jurnal Education and Development Vol 14 No 2 (2026): Vol 14 No 2 Mei 2026
Publisher : Institut Pendidikan Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37081/ed.v14i2.8465

Abstract

PLP I memberi mahasiswa calon guru matematika pengalaman awal untuk memahami kehidupan sekolah secara nyata. Artikel ini mendeskripsikan pelaksanaan PLP I di SMA Muhammadiyah Boarding School Kota Gorontalo dengan fokus pada kultur sekolah, kompetensi guru, karakteristik peserta didik, implementasi Kurikulum Merdeka, dan pembelajaran mendalam. Penelitian menggunakan pendekatan deskriptif kualitatif melalui observasi, wawancara, dokumentasi, dan catatan lapangan pada 4-18 Mei 2026. Hasil penelitian menunjukkan bahwa sekolah memiliki kultur religius, disiplin, ramah, dan kekeluargaan melalui pembiasaan 3S, doa bersama, salat berjamaah, apel pagi, dan nilai 5K. Guru matematika menunjukkan kompetensi profesional, pedagogik, sosial, dan kepribadian melalui penguasaan materi, pengelolaan kelas, media digital, dan pembelajaran berpusat pada siswa. Wawancara menunjukkan bahwa pembelajaran mendalam diterapkan melalui masalah kontekstual, pertanyaan pemantik, diskusi, presentasi, dan refleksi. PLP I memperkuat pemahaman calon guru tentang praktik keguruan, kultur sekolah, dan pembelajaran matematika bermakna di boarding school.
Co-Authors Febiyanti R. Hasan Hikmahturrahman Hikmahturrahman Maulidina Basalama Moh. Fajar Adam Yunus Nosva Adam Yunus Nur Elina Karim Nur Rahmatia R. Napu Nurhayati R. Napu Nur’ain S. Patilima Rahmi Nindi Arsyad Ricki Yuliardi Zulfahmi Mustapa R Zulfami Mustapa R