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All Journal JP2M (Jurnal Pendidikan dan Pembelajaran Matematika) Mathema: Jurnal Pendidikan Matematika
Agung Putra Wijaya
Pendidikan Matematika, FKIP, Universitas Lampung
Mathematics

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The Effect of The Guided Discovery Learning Model on Students Mathematical Reasoning Skills Stanley Gilbert Pangaribuan; Nurhanurawati; Agung Putra Wijaya
MATHEMA: JURNAL PENDIDIKAN MATEMATIKA Vol. 8 No. 2 (2026): MATHEMA
Publisher : Universitas Teknokrat Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33365/jm.v8i2.2383

Abstract

This research was motivated by the gap between the importance of mathematical reasoning skills and the reality that such skills remained relatively low among students in Indonesia. The research aimed to determine the effect of the guided discovery learning model on students’ mathematical reasoning skills. This research was conducted at SMP Negeri 13 Bandar Lampung during the even semester of the 2025/2026 academic year. The eighth-grade students were distributed across 10 classes, two of which were honors classes, namely VIII-3 and VIII-4; therefore, these two classes were excluded from the research population. Consequently, the research population consisted of students in classes VIII-1, VIII-2, and VIII-5 through VIII-10, totaling 8 classes. The research sample was selected using cluster random sampling, with class VIII-2 as the control class and class VIII-7 as the experimental class. The design used was a pretest-posttest control group design. The data in this research consisted of quantitative data obtained through a mathematical reasoning skills test. Based on the results of data analysis using the Mann-Whitney-U test, it was found that the increasing in mathematical reasoning skills of students who participated in guided discovery learning was higher than students who participated in conventional learning. Thus, it can be concluded that the guided discovery learning model has an effect on students’ mathematical reasoning skills.
THE IMPLEMENTATION OF STEM-INTEGRATED PROBLEM-BASED LEARNING TO IMPROVE STUDENTS’ MATHEMATICAL REASONING ABILITY Aulia Senawati; Sri Hastuti Noer; Agung Putra Wijaya
JP2M (Jurnal Pendidikan dan Pembelajaran Matematika) Vol 11, No 2 (2025)
Publisher : Universitas Bhinneka PGRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29100/jp2m.v11i2.7575

Abstract

In the era of the industrial revolution 4.0, improving students' mathematical reasoning abilities is crucial. Student-centered, collaborative, contextual, and inclusive learning is key to facing this era. This study aimed to determine the improvement of the implementation of STEM-integrated problem-based learning on students' mathematical reasoning abilities. The population in this study were all VIII grade students of SMP Negeri 4 Bandar Lampung in the 2024/2025 academic year, which were distributed into 10 classes. The samples in this study were students of class VIII I as the experimental class and class VIII J as the control class, which were selected by a purposive random sampling technique. The research design used is the pretest-posttest control group design. Data on mathematical reasoning ability in quantitative data was collected through test instruments in the form of descriptions on the material of the system of linear equations of two variables. Data analysis used the Mann-Whitney U test. The test results indicate that the increase in mathematical reasoning abilities of students who participated in STEM-integrated problem-based learning was higher than that of students who took part in conventional learning. This study concludes that implementing learning with STEM-integrated, problem-based learning can improve students' mathematical reasoning abilities.
Co-Authors Aulia Senawati Nurhanurawati Sri Hastuti Noer Stanley Gilbert Pangaribuan