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I GUSTI AGUNG GEDE WIADNYANA .
Universitas PGRI Mahadewa Indonesia
Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Environmental Science Health Professions Languange, Linguistic, Communication & Media Mathematics Mechanical Engineering Public Health Social Sciences Other

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The Influence of the Project Based Learning (PjBL) Learning Model on the Cognitive Achievement of Mathematics of Junior High School Students at SLBN 3 Denpasar Wiadnyana, I Gusti Agung Gede
Imajiner: Jurnal Matematika dan Pendidikan Matematika Vol 8, No 2 (2026): Imajiner: Jurnal Matematika dan Pendidikan Matematika
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/imajiner.v8i2.26684

Abstract

This study investigates the effectiveness of the Project-Based Learning (PjBL) paradigm in enhancing mathematical cognitive outcomes within a special education context. The primary motivation for this research is the prevalent low conceptual understanding of mathematics among students with special needs, often attributed to overly abstract instructional methods. Employing a quasi-experimental approach with a non-equivalent control group design, the study involved junior high school students at SLBN 3 Denpasar. Data were systematically collected using validated learning outcome instruments and analyzed through t-test statistics and effect size calculations. Empirical findings confirm that while the statistical significance value stood at 0.192, the obtained effect size coefficient of 0.81 indicates a substantial practical impact. This suggests that integrating project-based activities facilitates more concrete mathematical material assimilation compared to conventional methods. PjBL proved to provide a positive stimulus for students' knowledge retention; hence, this model is highly recommended as an alternative pedagogical strategy for teachers in special education schools. In conclusion, utilizing projects in instruction effectively bridges learning barriers for students with disabilities in comprehending numerical and spatial logic.
Co-Authors Ananda, I Made Aryanta Denok Lestari Giri, Putu Agus Semara Putra I Gusti Agung Ngurah Trisna Jayantika I Ketut Suada I Putu Eka Indrawan I Wayan Suanda I Wayan Suastra I Wayan Sumandya Kadek Ayu Ekasani Kadek Yogi Mayudana Kadek Yuniari Suryatini Mayudana, Kadek Yogi Mira Dharma Susilawaty MS Prof. Dr. Ketut Suma . MUHAMMAD AGUS SUPRAYUDI NI KADEK RINI PURWATI Pande Komang Suparyana Prof. Dr. Ketut Suma, MS . Putra, I Putu Edy Suardiyana Surat, I Made Syamsiar, Syamsiar Widana, I Wayan Wika Wiguna, Komang Adi Wika Wiguna, Komang Adi