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All Journal IndoMath: Indonesia Mathematics Education
Lazuardi Nugroho
Department of Mathematics Education, Universitas Negeri Yogyakarta, Indonesia
Humanities Education

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Impact of Guided Discovery Learning and Problem-Based Learning on Students’ Achievement and Locus of Control Lazuardi Nugroho; Mathilda Susanti; Fariz Budi Arafat
IndoMath: Indonesia Mathematics Education Vol 9, No 2 (2026): Article in Press
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/indomath.v0i0.168

Abstract

Learning achievement is influenced by learning models and students’ locus of control. However, empirical evidence on the interaction between Guided Discovery Learning and Problem-Based Learning with locus of control is still limited, creating an urgent need for this study. Therefore, this research aims to investigate the effects of Guided Discovery Learning and Problem-Based Learning on students’ mathematics achievement by considering locus of control as a blocking variable. Using a quasi-experimental Randomized Complete Block Design, two groups of 32 seventh-grade students were assigned to GDL and PBL. Data from pretest–posttest instruments and an LoC questionnaire were analyzed using descriptive statistics and Two-Way ANOVA. Results showed that the learning model significantly affected achievement, while its interaction with LoC wasn’t significant, although I-LoC students performed better on average. These findings indicate that structured, supportive models like GDL and PBL can reduce LoC-related differences and emphasize the need for future mathematics instruction that promotes guided exploration and equitable learning environments.
Co-Authors Fariz Budi Arafat Mathilda Susanti