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All Journal MASALIQ: Jurnal Pendidikan dan Sains Jurnal Tadris Matematika (JTMT)
Ulfa Luthfiani
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Religion Education Mathematics Social Sciences Other

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Pengaruh Model Pembelajaran Kooperatif Tipe STAD terhadap Keterampilan Kolaborasi Siswa Ulfa Luthfiani; Rini Afriani
MASALIQ Vol 6 No 3 (2026): MEI
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v6i3.10063

Abstract

Although the implementation of cooperative learning models in history learning has been widely studied, discussions that specifically analyze the effectiveness of the Student Teams Achievement Divisions (STAD) model in improving students’ collaboration skills still need to be strengthened. This study aims to analyze the effect of implementing the STAD-type cooperative learning model on students’ collaboration skills in history learning at SMA Negeri 1 Bandar. This study used a quantitative approach with a quasi-experimental design, involving 72 students selected through purposive sampling and divided into experimental and control classes. Data were collected through observation, questionnaires, and documentation, and were then analyzed using simple linear regression tests and t-tests. The results showed that the implementation of the STAD-type cooperative learning model had a positive and significant effect on improving students’ collaboration skills, as reflected in increased communication skills, group responsibility, active participation, and cooperation among students during the history learning process. These findings strengthen the relevance of cooperative learning in supporting the development of 21st-century skills, particularly collaboration skills in the context of history education. The conclusion of this study emphasizes that the STAD model can be used as an innovative student-centered learning strategy to create more active, interactive, and collaborative history learning. The implications of this study provide theoretical contributions to the development of cooperative learning literature and practical implications for teachers and educational institutions in optimizing the STAD model to improve students’ collaboration skills.
Development Of Learning Based Teaching Materials On Quadratic Function Materials To Improve Students' Mathematical Representation Skills Ulfa Luthfiani; Sehatta Saragih; Elfis Suanto
JTMT: Journal Tadris Matematika Vol 6 No 2 (2025): Volume 6, Issue 2, Desember 2025
Publisher : Universitas Islam Ahmad Dahlan (UIAD)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47435/jtmt.v6i2.4191

Abstract

This research aims to develop discovery learning-based teaching materials on quadratic functions to improve mathematical representation abilities of grade X students. The low mathematical representation ability of Indonesian students reflected in TIMSS 2015 results is the research background. Research and Development (R&D) methodology with a 4D model (Define, Design, Develop, Disseminate) was used to develop the learning product. Validation was conducted by three mathematics education experts, practicality testing through student response questionnaires, and effectiveness was measured using a Post-test Only Control Group design comparing experimental and control classes. The findings showed very high validity at 91.54%, practicality reached 79.31% in the practical category, and significant effectiveness demonstrated through average score increase from 73.27 to 83.20 (sig = 0.000 < 0.05). The Z proportion test yielded 1.8974 > 1.645, indicating more than 75% of students achieved the minimum mastery standard. This teaching material successfully facilitates mathematical representation skill development through structured discovery activities, although visual representation aspects need further optimization. The discovery learning approach effectively optimizes students' knowledge construction through meaningful learning experiences while overcoming conventional learning limitations in developing mathematical representation competencies
Co-Authors Elfis Suanto Rini Afriani Sehatta Saragih