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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Bioscientist : Jurnal Ilmiah Biologi
Lestari Alibasyah
Universitas Tadulako
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Immunology & microbiology Materials Science & Nanotechnology Physics Social Sciences

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Empowering Junior High School Students' Thinking Skills Through the Application of Problem-Based Learning Models Gamar B. N. Shamdas; Lestari Alibasyah; Isnainar; Zulaikhah Dwi Jayanti
Jurnal Penelitian Pendidikan IPA Vol 11 No 1 (2025): January
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i1.9080

Abstract

The reason for this review is to portray imaginative reasoning abilities and science-critical abilities to think in middle school understudies by using issue-based learning models. The study was directed at class VIII students at one of Palu City's junior high schools. The population of class VIII consists of five classes totaling 160 students. Purposive sampling was used to select two classes as samples. Data on problem-solving and creative thinking abilities were obtained through essay tests. The instruments used were teaching modules, LKPD, and tests. Information investigation utilized an autonomous t-test with the assistance of SPSS variant 25.0. The findings revealed that the creative thinking skills in conventional classes were significantly lower than problem-based learning classes t(62)=13.56, p<0.001, and problem-solving skills in conventional classes were considerably lower than problem-based learning classes t(62)=14.63, p<0.001. Thus, this study concludes that the creative thinking skills and problem-solving abilities of Class VIII SMP students in science subjects can be empowered by implementing a problem-based learning model.
The Effect of Implementing the Problem-Based Learning Model on Science Learning Outcomes at SMP Negeri 13 Sigi Biromaru Aisyah Aulia; Lilies; Abdul Ashari; Gamar B. N. Shamdas; Lestari Alibasyah; Syech Zainal
Bioscientist : Jurnal Ilmiah Biologi Vol. 14 No. 2 (2026): June
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v14i2.20156

Abstract

This study aimed to analyze the effect of implementing the Problem-Based Learning (PBL) model on eighth-grade students’ science learning outcomes. This study employed a quantitative quasi-experimental approach with a nonequivalent control group design. The sample consisted of 53 eighth-grade students who were assigned to an experimental class and a control class. The experimental class was taught using the PBL model, whereas the control class received conventional instruction. Data were collected using a multiple-choice test administered before and after the treatment as a pretest and posttest. The test was designed to measure students’ cognitive learning outcomes in science. The data were analyzed using an independent samples t-test after the initial abilities of the two groups were examined. The results indicated that the two groups had relatively equivalent initial abilities before the intervention. After the treatment, the experimental class achieved a higher posttest mean score than the control class, and the difference between the groups was statistically significant. These findings suggest that PBL is more effective than conventional instruction in improving students’ science learning outcomes.
Co-Authors Abdul Ashari Aisyah Aulia Gamar B. N. Shamdas Isnainar Lilies Syech Zainal Zulaikhah Dwi Jayanti