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Project-based learning implementation with a cooperative approach on the topic of correlation analysis Darojat, Latifah; Pratama, David
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 13 No 1 (2025)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v13i1.19161

This study aims to explore the implementation of project-based learning (PBL) with a cooperative approach on correlation analysis material in class XII of SMA Al Islam 1 Surakarta. In studying correlation analysis material, several problems are often found, including the lack of application skills and also the lack of student involvement in the learning process. Therefore, through this project-based learning activity, students carry out collaborative activities in compiling projects based on real data so that they can better understand the concept of correlation in depth. This study uses a qualitative method and involves 30 students who are grouped into five groups. Each group is given the task of designing and implementing a correlation analysis project between two variables using a collaborative project-based learning approach. Data were collected through observation and student project results. Furthermore, the data was analyzed using data reduction, data display, and conclusion drawing/verifying techniques. The results of the study indicate that this method is effective in providing students with an understanding of the concept of correlation analysis, collaboration skills, communication, and problem solving. The average project score is in the category of developing according to expectations to very developed. Evaluation through a questionnaire showed that 72.41% of students gave positive responses to the learning experience, such as understanding the material, the ability to work together, and data processing using Microsoft Excel. These findings support the effectiveness of project-based learning in facilitating 21st century skills. Overall, this research provides a positive contribution to education. The implementation of Project Based Learning with a cooperative approach can be an alternative effective learning models to build conceptual understanding and collaboration skills in the modern education era.

Empowering Communities Through GeoGebra: A Training Program on Visualization Technology for Transformation Geometry Pratama, David; Noverli, Muthiah Fildzah
Jurnal Pengabdian kepada Masyarakat (Indonesian Journal of Community Engagement) Vol 11, No 2 (2025): June
Publisher : Direktorat Pengabdian kepada Masyarakat Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpkm.104835

The integration of technology in mathematics education has garnered increasing attention for its potential to enhance students’ understanding of abstract concepts. This study examined the implementation of a GeoGebra-based training program for pre-service mathematics teachers at Universitas Singaperbangsa Karawang (UNSIKA), focusing on improving their visualization skills in transformation geometry. The training employed a project-based learning approach, incorporating online instruction, group projects, and collaborative discussions. Results indicated that GeoGebra effectively strengthened participants’ conceptual grasp of geometric transformations, as evidenced by high project completion rates and positive survey feedback. Recorded instructional videos significantly supported self-paced learning, with 84.4% of participants utilizing these resources for project completion. However, challenges in comprehending coordinate transformations suggested a need for further guidance and targeted exercises. The study underscored GeoGebra’s efficacy in advancing mathematical visualization skills and advocated for its wider adoption in mathematics teacher education. Future research should investigate extended training durations and adaptive learning strategies to address conceptual difficulties more thoroughly.

E-module for geometric transformation visualization: A case study on generation Z mathematics education Pratama, David; Darojat, Latifah
Indonesian Journal of Science and Mathematics Education Vol. 8 No. 1 (2025): Indonesian Journal of Science and Mathematics Education
Publisher : Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/ijsme.v8i1.25875

Teaching transformation geometry in schools requires visualization tools to enhance students' conceptual understanding. Therefore, mathematics education students need to be equipped with adequate visualization skills. This study aimed to develop an interactive e-module based on YouTube video tutorials and simple projects to help students, particularly Generation Z, visualize transformation geometry concepts. The development model employed was the ADDIE (Analysis, Design, Development, Implementation, Evaluation). The findings indicated that the developed interactive e-module was valid (88.2%, excellent category), practical (75%, good category), and effective (94.3%) in supporting students in visualizing transformation geometry concepts. Integrating YouTube tutorial videos and simple projects facilitates students in learning and understanding the visualization of transformation geometry effectively and comprehensively. This study has implications for integrating technology-based interactive tools in learning, which can significantly enhance student engagement and mastery of abstract mathematical concepts.

Evaluasi Program Teaching Factory di Sekolah Menengah Kejuruan menggunakan CIPP Framework: Evaluation of the Teaching Factory Program in Vocational High Schools Using the CIPP Framework Prihantoro, Constantinus Rudy; Nugraha, Hari Din; Gumelar, Agung; Pratama, David; Gunadi, Diandra Keisha; Ibrahim, Fakhrizal Hafish
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 13 No. 2 (2025)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v13i2.95013

Teaching Factory is a learning program that optimizes the curriculum, resources, and human capital in Vocational High Schools (SMK) of Centers of Excellence. The objectives of this study are: (1) to identify the level of conformity in the implementation of the Teaching Factory program by analyzing the Context, Input, Process, and Product (CIPP) at five SMKs in DKI Jakarta; and (2) to formulate recommendations for improving and developing the Teaching Factory program to be more effective and sustainable. This research employed a quantitative method with a CIPP-based evaluation instrument, involving vice principals of curriculum and facilities, teachers, and students as research subjects. The findings reveal that: (1) Context: average score 3.61 out of 4, the curriculum is relatively aligned with industry needs, but the understanding of educational regulations remains low due to limited dissemination of government policies to teachers and school management; (2) Input: average score 3.55, facilities and infrastructure are inadequate due to limited budgets and lack of regular equipment calibration, which reduces the quality of marketable products and human resources, although teachers’ pedagogical competence (avg. 3.8) is already good; (3) Process: average score 3.59, learning methods are less innovative as teachers still rely on lectures and employ ineffective assessment instruments, resulting in low collaboration among students and suboptimal graduate employability; (4) Product: average score 3.26, the quality of marketable products falls below industry standards due to weak school quality control systems and the underutilization of project-based assessment. These findings can serve as a basis for strategies and curriculum development that better prepare students for the labor market and help reduce the unemployment rate among SMK graduates.

Analyzing conceptual and procedural errors in solving routine problems on gradients and straight-line equation among prospective mathematics teachers Pratama, David; Azizah, Nur
Journal of Didactic Mathematics Vol 6, No 2 (2025): August
Publisher : Mahesa Research Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34007/jdm.v6i2.2722

This study examines the types of errors made by prospective mathematics teachers in solving routine problems involving gradients and linear equations, which are fundamental to Analytic Geometry. Employing a qualitative descriptive methodology, the research involved 35 mathematics education students who completed a semi-structured written test designed to assess both conceptual comprehension and procedural proficiency. Eleven responses containing incomplete or incorrect solutions were purposively selected for detailed analysis. Data were analyzed using Miles and Huberman’s interactive model, encompassing stages of data reduction, presentation, and conclusion derivation. Errors were systematically categorized into conceptual, procedural, and other types, with further refinement into 18 specific misconception subtypes. The findings revealed persistent misconceptions in gradient interpretation, improper application of linear equation forms, and frequent procedural errors in algebraic simplification and negative sign operations. Several students exhibited overlapping error types, indicating a strong correlation between conceptual gaps and procedural breakdowns. These results emphasize the significance of designing instructional interventions that simultaneously enhance conceptual and procedural proficiency.

EFFECTIVENESS OF TEACHING FACTORY IMPLEMENTATION IN PRODUCTIVE LEARNING: AN EVALUATION FROM VOCATIONAL TEACHERS' PERSPECTIVES Gumelar, Agung; Nugraha, Hari Din; Pratama, David; Utami, Salsa Belladinna Putri; Sutrisno, Himawan Hadi
VOCATIONAL: Jurnal Inovasi Pendidikan Kejuruan Vol. 5 No. 3 (2025)
Publisher : Pusat Pengembangan Pendidikan dan Penelitian Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51878/vocational.v5i3.6809

Studi ini mengevaluasi efektivitas implementasi Teaching Factory (TEFA) dalam pembelajaran produktif dari perspektif guru kejuruan dan mengidentifikasi prioritas berbasis data untuk perbaikan pada tingkat butir soal. Survei potong lintang dilakukan terhadap 19 guru mata pelajaran produktif dari sekolah menengah kejuruan (SMK) negeri dan swasta di Jakarta yang telah menerapkan TEFA, menggunakan instrumen versi guru yang terdiri dari 31 butir soal tipe Likert (1–4) yang mencakup Produk (16 butir soal), Kompetensi Pedagogis (6 butir soal), dan Lulusan Siap Kerja (9 butir soal). Validitas isi telah ditetapkan selama pengembangan instrumen melalui tujuh penilai ahli, dengan semua butir soal melebihi ambang batas minimum Aiken’s V sebesar 0,76. Analisis mencakup rata-rata dan simpangan baku per dimensi dan per butir soal (diperingkat), interval kepercayaan 95% untuk rata-rata keseluruhan menggunakan uji t Student, dan alfa Cronbach untuk setiap dimensi. Hasil penelitian menunjukkan rata-rata keseluruhan M = 3,63 (SD = 0,30, 95% CI [3,49, 3,77]), Produk M = 3,58 (SD = 0,34, ? = 0,88), Kompetensi Pedagogis M = 3,81 (SD = 0,26, ? = 0,65), dan Lulusan Siap Kerja M = 3,60 (SD = 0,39, ? = 0,88). Peringkat item menyoroti kekuatan dalam memahami dan menerapkan gambar, kepatuhan terhadap SOP, supervisi guru, dan keterlibatan siswa dalam pengendalian mutu, sementara area dengan peringkat lebih rendah meliputi waktu penyelesaian, biaya (bahan/harga), dan pemecahan masalah teknis mandiri. Temuan ini menyiratkan penguatan SOP dan pengendalian mutu, pengaturan keseimbangan waktu takt/lini, perluasan peningkatan keterampilan berbasis industri dan penilaian autentik bagi guru, serta integrasi biaya dan pemecahan masalah teknis terstruktur ke dalam proyek TEFA untuk mendukung pengambilan keputusan berbasis bukti. ABSTRACTThis study evaluates the effectiveness of Teaching Factory (TEFA) implementation in productive learning from the perspective of vocational teachers and identifies data?driven priorities for improvement at the item level. A cross?sectional survey was conducted with 19 productive?subject teachers from public and private vocational high schools (SMK) in Jakarta that have implemented TEFA, using a teacher?version instrument comprising 31 Likert?type items (1–4) across Product (16 items), Pedagogical Competence (6 items), and Job?Ready Graduates (9 items). Content validity had been established during instrument development through seven expert raters, with all items exceeding the minimum Aiken’s V acceptance threshold of 0.76. Analyses included means and standard deviations by dimension and by item (ranked), a 95% confidence interval for the overall mean using Student’s t, and Cronbach’s alpha for each dimension. Results showed an overall mean of M = 3.63 (SD = 0.30, 95% CI [3.49, 3.77]), Product M = 3.58 (SD = 0.34, ? = 0.88), Pedagogical Competence M = 3.81 (SD = 0.26, ? = 0.65), and Job?Ready Graduates M = 3.60 (SD = 0.39, ? = 0.88). Item rankings highlight strengths in understanding and applying drawings, adherence to SOPs, teacher supervision, and student involvement in quality control, while lower?ranked areas include turnaround time, costing (materials/pricing), and independent technical problem?solving. The findings imply strengthening SOPs and quality control, arranging takt time/line balancing, expanding industry?based upskilling and authentic assessment for teachers, and integrating costing and structured technical problem?solving into TEFA projects to support evidence?based decision?making.

Project-based learning implementation with a cooperative approach on the topic of correlation analysis Darojat, Latifah; Pratama, David
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 13 No 1 (2025)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v13i1.19161

This study aims to explore the implementation of project-based learning (PBL) with a cooperative approach on correlation analysis material in class XII of SMA Al Islam 1 Surakarta. In studying correlation analysis material, several problems are often found, including the lack of application skills and also the lack of student involvement in the learning process. Therefore, through this project-based learning activity, students carry out collaborative activities in compiling projects based on real data so that they can better understand the concept of correlation in depth. This study uses a qualitative method and involves 30 students who are grouped into five groups. Each group is given the task of designing and implementing a correlation analysis project between two variables using a collaborative project-based learning approach. Data were collected through observation and student project results. Furthermore, the data was analyzed using data reduction, data display, and conclusion drawing/verifying techniques. The results of the study indicate that this method is effective in providing students with an understanding of the concept of correlation analysis, collaboration skills, communication, and problem solving. The average project score is in the category of developing according to expectations to very developed. Evaluation through a questionnaire showed that 72.41% of students gave positive responses to the learning experience, such as understanding the material, the ability to work together, and data processing using Microsoft Excel. These findings support the effectiveness of project-based learning in facilitating 21st century skills. Overall, this research provides a positive contribution to education. The implementation of Project Based Learning with a cooperative approach can be an alternative effective learning models to build conceptual understanding and collaboration skills in the modern education era.

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