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Chemistry in Education
Published by Universitas Negeri Semarang
ISSN : 22526609     EISSN : 25026852     DOI : https://doi.org/10.15294/chemined
Core Subject : Education,
Education
Chemistry in Education [P-ISSN 2252-6609 | E-ISSN 2502-6852] is issued two times per year, each of them includes articles of research and conceptual analysis results on the chemical education field. To memorize important events or agenda of institution, it is posible to publish a special issue.
Arjuna Subject : Ilmu Sosial - Pendidikan
Articles 24 Documents
 1   2   3 
The Effect of the Six Thinking Hats Strategy on Student Grouping to Improve Problem-Solving Skills and Concept Mastery in Reaction Rate Material Azzahra, Elvara Siti; Harjito, Harjito
Chemistry in Education Vol. 14 No. 2 (2025): Chemistry in Education
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/chemined.v14i2.31289

Abstract

This study aims to analyze the effect of the Six Thinking Hats strategy on enhancing students’ problem-solving skills and conceptual understanding in the topic of reaction rates. The research employed a quasi-experimental method using a non-equivalent control group design. Instruments included concept mastery tests (pretest and posttest), student worksheets (LKPD), and student response questionnaires. Data were analyzed using the Mann-Whitney U test, the Friedman test, Spearman's Rank correlation, and effect size calculations. The results showed that the implementation of the Six Thinking Hats strategy had a significant impact on the improvement of students’ problem-solving abilities and conceptual understanding, as indicated by the Mann-Whitney U test results for each LKPD (p < 0.05) and large to very large effect sizes (Cohen’s d = 1.15; 1.48; 0.56; and 2.99). The Friedman test revealed statistically significant differences in performance across LKPDs in both the experimental and control classes (p = 0.000). In terms of conceptual understanding, a significant difference was observed (p = 0.000), with an increase in Cohen’s d from 0.65 (moderate) to 2.08 (large). However, the Spearman Rank correlation test indicated no significant relationship between conceptual understanding and problem-solving ability, suggesting that individual and collaborative assessment contexts influence student outcomes differently.
Small-Scale Chemistry Experiment in Guided Inquiry Learning to Improve Concept Understanding and Science Process Skills Zahronada, Afifa Ayu; Cahyono, Edy; Sumarti, Sri Susilogati
Chemistry in Education Vol. 14 No. 2 (2025): Chemistry in Education
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/chemined.v14i2.30468

Abstract

This study aims to analyze small-scale chemistry in guided inquiry to improve the relationship between students' conceptual understanding and science process skills. The research method used is a quasi-experimental design with a pretest-posttest nonequivalent control group design. The sample of this study consisted of two classes: the experimental class, which used small-scale chemistry in guided inquiry, and the control class, which employed conventional learning. The instruments used included a test (two-tier test) to measure conceptual understanding and observation sheets to measure science process skills. Data analysis was carried out using normality tests, homogeneity tests, t-tests, and Pearson correlation tests. The study's results showed a significant increase in understanding and science process skills in the experimental class compared to the control class. The increase in conceptual understanding was evident from the hypothesis test, with the N-gain value of the experimental class at 0.6 (moderate) and the control class at 0.29 (low). Meanwhile, the science process skills obtained t-test results and observation sheets, with an average of "good" in the experimental class and "sufficient" in the control class. The results of the correlation test showed a significant positive relationship between conceptual understanding and science process skills, with a p-value of < 0.05. value.
Development of a Multiple Representation-Containing Students’ Worksheet Integrated with Problem-Based Learning to Improve Students’ Critical Thinking Skills on the Hydrocarbon Topic Lutfiyani, Fiki Anisa; Nurhayati, Sri
Chemistry in Education Vol. 14 No. 2 (2025): Chemistry in Education
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/chemined.v14i2.32220

Abstract

The goal of this research study is to develop feasible and effective multiple representation-containing students’ worksheet integrated with Problem-Based Learning that receive feedback from students. This research uses the R&D method with the 4-D research model, which includes define, design, develop, and disseminate. The feasibility of the students’ worksheet is evident through the expert validators' assessment of the material and media experts' validation sheets, with average validation results of 88.59% and 90.41%, respectively, categorized as highly feasible. Additionally, a readability test was conducted, yielding a score of 88,33%, which is categorized as “very good”. Based on the expert validation and readability assessment results, the developed students’ worksheet is suitable for teaching hydrocarbon topic. The students’ worksheet effectiveness can be seen in the Wilcoxon test results, which were obtained from the students’ pretest and posttest scores to determine if there was significant improvement in their critical thinking skills. The Effect Size test yielded a value of 0,876, indicating high effectiveness. Based on these results, the students’ worksheet is effective in improving critical thinking skills. Students' responses yielded a percentage of 85.33%, categorized as "very interesting." The results showed that multiple representation-containing students’ worksheet integrated with Problem-Based Learning content improves Students’ Critical Thinking Skills on the Hydrocarbon topic.
Development of E-Worksheet Problem-Based Learning Model with Ethnoscience Content to Improve Critical Thinking Skills Setyawati, Annisa; Prasetya, Agung Tri
Chemistry in Education Vol. 14 No. 2 (2025): Chemistry in Education
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/chemined.v14i2.32424

Abstract

This study was designed as an E-worksheet model of Problem-Based Learning with ethnoscience content. The study aimed to produce a product, analyze its feasibility and effectiveness in improving students' critical thinking skills. The study included research and development (R&D) with a 3D (Three-D) design consisting of the Define, Design, and Develop stages. The research model is a quasi-experimental design using a posttest-only control group design. The study subjects consisted of 71 students from grades XI-11 and XI-12. Data collection methods included both test and non-test instruments. Data collection instruments included interview sheets, questionnaires, surveys, and assessments. Data analysis of the developed product included feasibility tests, effectiveness tests, and student responses to the E-worksheet product. The research results showed that the expert validation of the material, media, and readability test indicated that the E-worksheet product was feasible for use, with Aiken's V coefficients of 0.95 and 0.89, which are very high criteria, and a score percentage of 87.06%, which is a very good criterion. The results of the large-scale trial showed that the E-worksheet was effective in improving critical thinking skills based on the Mann Whitney test result of 0.002 < 0.05, which indicated a significant difference in critical thinking skills between the experimental class and the control class. The E-worksheet product received a very good response from students with a score of 90.48%. The E-worksheet PBL model with ethnoscience content developed is feasible and effective in improving critical thinking skills and receives a very good response from students.

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