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All Journal Hydrogen: Jurnal Kependidikan Kimia Aurelia: Jurnal Penelitian dan Pengabdian Masyarakat Indonesia
Ndruru, Ester
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Humanities Chemistry Computer Science & IT Education Law, Crime, Criminology & Criminal Justice Social Sciences

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The Role of Report Texts in Improving Understanding of Chemical Material Through Practical Reports and Research in High Schools Ndruru, Ester; Ardi, Mutiara; Sinaga, Sarah Agnesia; Lubis, Fitriani
AURELIA: Jurnal Penelitian dan Pengabdian Masyarakat Indonesia Vol 3, No 2 (2024): July 2024
Publisher : CV. Rayyan Dwi Bharata

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57235/aurelia.v3i2.2747

Abstract

This research aims to explore the effectiveness of using practicum reports in chemistry learning in high school, with a focus on developing students' writing skills and understanding of concepts. Formal education, as regulated in Law of the Republic of Indonesia no. 20 of 2003, has an important role in developing students' potential, including cognitive aspects and practical skills. The research method used is a combination of a qualitative approach through literature study and a quantitative approach through questionnaires filled out by students of SMAN 5 Medan. Data analysis showed that the majority of students (70%) agreed that the lab report enabled the application of chemistry concepts in hands-on practice, which improved their understanding. In addition, 90% of students felt motivated to explain the results of the practicum, and 85% felt happy with the practicum method used. The research results show that integration between practicum and report writing skills can increase students' understanding of chemistry concepts and interest in this subject. However, students' abilities in writing practical reports still need to be improved, especially in analyzing data and connecting theory with practical results. Thus, the use of practicum reports in chemistry learning in high school has proven to be effective in improving students' understanding and practical skills, although further efforts are still needed to improve students' analytical and scientific writing skills.
Development and Effectiveness of a Canva-Based Problem-Based Learning E-Module Using the 4D Model to Improve Students’ Understanding of Molecular Shapes Ndruru, Ester; Susanti, Nora; Lumbantobing, Jhonatan Ariski
Hydrogen: Jurnal Kependidikan Kimia Vol. 14 No. 2 (2026): April 2026
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v14i2.19963

Abstract

This study aims to develop and evaluate the effectiveness of a Canva-based e-module using the Problem-Based Learning (PBL) approach to improve students’ understanding of molecular shapes. The research employed a Research and Development (R&D) method using the 4D model (define, design, develop, disseminate). The effectiveness test applied a one-group pretest–posttest design involving 35 tenth-grade students at SMA Negeri 2 Medan selected through purposive sampling. The research instrument consisted of a multiple-choice test that was validated and tested for reliability (KR-20 = 0.811). Data analysis techniques included normality test, paired sample t-test, and N-gain analysis. The validation results showed that the e-module was highly feasible, with scores of 90.56% from media experts and 89.38% from material experts. The paired t-test results indicated a significant difference between pretest and posttest scores (p < 0.05), supported by an N-gain value of 0.76 (high category). These findings indicate that the Canva-based PBL e-module is both feasible and statistically effective in improving students’ understanding of molecular shapes.
Co-Authors Ardi, Mutiara Fitriani Lubis Lumbantobing, Jhonatan Ariski Nora Susanti Sinaga, Sarah Agnesia