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All Journal JCER (Journal of Chemistry Education Research) Jurnal Ilmiah Nusantara
Arief Ertha Kusuma
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Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Languange, Linguistic, Communication & Media Social Sciences

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IMPROVES CRITICAL THINKING SKILLS AND SELF-EFFICACY OF LEARNERS USING THE PJBL-STEAM MODEL IN WETLAND CONTEXTS Muhammad, Rusmansyah; Siti Awalia Rahmah; Syahmani; Mohammad Nor Aufa; Arief Ertha Kusuma; Isnawati
JCER (Journal of Chemistry Education Research) Vol. 8 No. 2 (2024): Volume 8 No. 2 December 2024
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jcer.v8n2.p104-109

Abstract

Critical thinking skills are one of the essential thinking skills mastered in the 21st century for the progress of a nation. They can help a person to solve problems by interpreting, analyzing, evaluating, and inferring. Self-efficacy is a person's belief in his ability to solve problems. The ability to think critically is related to self-efficacy. The PjBL-STEAM model is one of the alternatives that seek to improve student’s critical thinking and self-efficacy skills. The wetland context referred to in this study uses a solution of fruits that can live in wetlands as one of the learning media on electrolyte and nonelectrolyte solution materials. This study aims to examine the improvement of critical thinking and self-efficacy of students through the use of the PjBL-STEAM learning model in wetland contexts by comparing pretest and posttest values. This research model is quasi-experimental with a one-group pretest-postest research design. This study was conducted at SMAN 3 Barabai with a study population of class X MIA, and the sample taken purposively was 25 students of class X MIA 3. Data collection using tests and questionnaires. Data analysis was carried out by comparing pretest and posttest values. The results showed that the PjBL-STEAM learning model in the wetland context could improve the critical thinking skills and self-efficacy of students with an N-gain value of critical thinking ability of 0.58 (moderate category) and N-gain self-efficacy of 0.75 (high category). In other words, using PjBL-STEAM in wetland contexts is stated to be effective for improving students' critical thinking skills and self-efficacy.
Peningkatan Kemampuan Pemecahan Masalah Matematis Siswa Melalui Pendekatan TaRL Menggunakan Problem-Based Learning Fitri Fitri; Suciati Suciati; Arief Ertha Kusuma; Herdiansyah Herdiansyah; Yansar Yansar
JURNAL ILMIAH NUSANTARA Vol. 1 No. 6 (2024): November
Publisher : CV. KAMPUS AKADEMIK PUBLISING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61722/jinu.v1i6.4099

Abstract

This research investigates enhancing students' mathematical problem-solving skills through the Teaching at the Right Level (TaRL) approach, utilizing the Problem-Based Learning (PBL) model focused on social arithmetic. The study involved 31 seventh-grade students at SMP Negeri 1 Tarakan during the 2023/2024 academic year and followed the Kemmis & Taggart PTK model, comprising planning, action, observation, and reflection across two cycles. Implementation success criteria were defined as 75% of students scoring ≥ 74. In the first cycle, there was a slight decrease (3%) in students achieving this score; however, the second cycle showed a 12% improvement. Ultimately, 97% of students scored ≥ 74, averaging 91.78. These findings indicate that integrating the TaRL approach with the PBL model effectively enhances the mathematical problem-solving skills of junior high school students in social arithmetic
Co-Authors Fitri Fitri Herdiansyah Herdiansyah ISNAWATI Mohammad Nor Aufa Muhammad, Rusmansyah Siti Awalia Rahmah Suciati Suciati Syahmani Yansar Yansar