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All Journal JTAM (Jurnal Teori dan Aplikasi Matematika) Eduvest - Journal of Universal Studies
Hermawan, Hendry
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Aerospace Engineering Computer Science & IT Health Professions Mathematics Neuroscience Social Sciences

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Organizational Culture Transformation Through the Leadership of the Principal at Sdn Sungai Taib in the Adiwiyata Program Herliana, Puspa; Aryani, Dewi; Hermawan, Hendry; Aslamiah, Aslamiah; Cinantya, Celia
Eduvest - Journal of Universal Studies Vol. 5 No. 9 (2025): Eduvest - Journal of Universal Studies
Publisher : Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/eduvest.v5i9.51088

Abstract

This study aims to examine the contribution of the principal in implementing the adiwiyata program at SDN Sungai Taib, through an in-depth exploration of the principal's leadership role in creating an innovative and collaborative learning environment. The research method used is descriptive qualitative with data analysis using NVivo software. Data were collected through in-depth interviews, observations, and documentation. The research participants included the principal, the vice principal, and several teachers. The research results show that the principal's leadership significantly contributes to the successful implementation of the adiwiyata program by creating a learning environment that supports innovation and creativity. The principal also managed to overcome resistance to change and resource limitations through effective and communicative leadership strategies. In conclusion, the principal's contribution to implementing the adiwiyata program at SDN Sungai Taib is highly significant. Through visionary and inclusive leadership, the principal successfully transformed SDN Sungai Taib into a National Adiwiyata School.
Creative Geometry through Roof Modeling: Enhancing Angle Understanding via Deep Learning Herliana, Puspa; Hermawan, Hendry; Sulistiyana, Sulistiyana; Aslamiah, Aslamiah; Suriansyah, Ahmad
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.v9i4.33710

Abstract

This study aimed to evaluate the effectiveness of deep learning-based geometry instruction using miniature roof construction in improving students’ understanding of angles. A quasi-experimental design was conducted at SMPN 1 Kotabaru with 64 seventh-grade students divided into experimental and control groups. The experimental group participated in eight sessions of project-based learning that integrated contextual modeling and collaborative exploration, while the control group received conventional textbook-based instruction. Students’ comprehension of angle concepts including classification, measurement, and application was assessed using a validated geometry test and structured reflection journals. The results showed that students in the experimental group demonstrated significantly greater improvement in angle understanding compared to the control group. Statistical analysis confirmed the effectiveness of the intervention, with a large performance gap favoring the experimental group. These findings suggest that deep learning strategies, when combined with hands-on modeling and contextual relevance, can substantially enhance conceptual mastery in geometry education. 
Co-Authors Ahmad Suriansyah Aryani, Dewi Aslamiah Aslamiah Cinantya, Celia Herliana, Puspa Sulistiyana, Sulistiyana