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All Journal Jambura Journal of Educational Chemistry Science and Education Journal Damhil: Jurnal Pengabdian kepada Masyarakat
Weny J.A. Musa
Universitas Negeri Gorontalo
Humanities Chemistry Education Social Sciences Other

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Epistemic Agency as a Mediator in Dual-Path Learning: Insights from Indonesian Chemistry Classrooms Ramona Nintias R. Abas; Weny J.A. Musa; Lukman Abdul Rauf Laliyo; Masrid Pikoli; Akram La Kilo
Jambura Journal of Educational Chemistry Vol 8, No 1 (2026): February
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjec.v8i1.34366

Abstract

This study investigates the mediating role of epistemic agency in the relationship between students’ perceptions of constructivist learning environments and their conceptual understanding in Indonesian chemistry classrooms. A sequential explanatory mixed-methods design was employed, integrating quantitative and qualitative approaches. In the quantitative phase, data were collected from 712 high school students across five schools using an adapted Constructivist Learning Environment Survey (CLES) and a three-tier diagnostic chemistry test. Rasch modeling confirmed the strong psychometric properties of the adapted CLES, while structural equation modeling (SEM) revealed that epistemic agency significantly mediated the relationship between classroom environment perceptions and conceptual understanding. In the qualitative phase, thematic analysis of interviews with 12 selected students uncovered three dominant themes contributing to misconceptions: limited dialogic space, lack of contextualization, and teacher-dominated instruction. The integration of both data strands demonstrates that epistemic agency is not only influenced by pedagogical practices but also shaped by cultural norms. These findings extend the dual-path learning framework by embedding agency as a key mechanism for conceptual change. Pedagogically, the results underscore the need for dialogic, student-centered learning environments that promote active participation and reduce misconceptions. Policy-wise, the findings align with the OECD Learning Compass 2030 and Indonesia’s Merdeka Belajar curriculum, emphasizing the importance of agency-oriented strategies in achieving global education standards.
STEM-Integrated Problem-Based Learning as a Cognitively Aligned Framework for Enhancing Critical Thinking in Thermochemistry Dea Marsanda Condong; Mangara Sihaloho; Thayban Thayban; Lukman Abdul Rauf Laliyo; Weny J.A. Musa; Erga Kurniawati; Haris Munandar; Siti Istiqomah Nggole
Jambura Journal of Educational Chemistry Vol 8, No 1 (2026): February
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjec.v8i1.37514

Abstract

Developing students’ critical thinking skills remains a major challenge in chemistry education, particularly in thermochemistry, which requires conceptual, symbolic, and quantitative reasoning. While STEM-integrated problem-based learning (PBL–STEM) has gained increasing attention, limited studies have examined how this instructional approach aligns with the cognitive structure of critical thinking. This study investigated the effect of the PBL–STEM model on students’ critical thinking skills in thermochemistry. A quasi-experimental design involving 64 tenth-grade students was employed. Participants were selected using purposive sampling and assigned to an experimental group and a control group. Critical thinking skills were measured using a 20-item essay test based on Facione’s framework. The instrument demonstrated high reliability (Cronbach’s α = 0.915) and strong content validity (CVI = 0.93). Data were analyzed using an independent-samples t-test. Results showed a significant difference between groups (t = 4.997, p < 0.05), with the experimental group achieving higher mean scores (M = 80.80) than the control group (M = 65.38). The effect size (Cohen’s d = 1.25) indicates a large instructional impact. These findings suggest that STEM-integrated PBL provides a cognitively aligned framework for fostering critical thinking in chemistry learning.
Praktikum Berbasis Fun Chemistry untuk Meningkatkan Minat Belajar Siswa di SMA Negeri 1 Pagimana Vivi Dia Afrianti Sangkota; Weny J.A. Musa; Erga Kurniawati; Najmah Najmah; Haris Munandar; Thayban Thayban; Auli Irfah
Damhil: Jurnal Pengabdian kepada Masyarakat Vol 3, No 1: June 2024
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/damhil.v3i1.26588

Abstract

Chemistry learning at the high school level often faces challenges in how to create interesting and fun learning for students. the current paradigm of chemistry subjects is often considered scary by students, so it is necessary to take an innovative approach with the main focus of this service is to create a positive and inspiring learning experience in the school environment, motivating students to be more actively involved in chemistry learning. The service aims to explore the implementation of fun chemistry practicum as a strategy to increase students' interest in learning at SMA Negeri 1 Pagimana. This practicum was designed with the aim of changing the conventional chemistry learning paradigm into a fun and memorable experience. Through interactive and visual experiments, students are invited to actively participate in practical activities involving simple chemical reactions and demonstrations that arouse their curiosity. The initial evaluation showed a positive change in students' behavior as seen from their enthusiasm in participating in this activity.
Identifikasi Metabolit Sekunder Dan Aktivitas Antioksidan Ekstrak Metanol Daun Jambu Biji Wiskawati Kuka; Weny J.A. Musa; Erni Mohammad; Suleman Duengo; Najmah Najmah
Science and Education Journal (SICEDU) Vol 5 No 3 (2026): Science and Education Journal 2026
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/sicedu.v5i3.1552

Abstract

Penelitian ini bertujuan untuk mengidentifikasi golongan metabolit sekunder dan mengevaluasi aktivitas antioksidan ekstrak metanol daun jambu biji (Psidium guajava L.) segar maupun kering yang berasal dari Gorontalo. Metode yang digunakan adalah eksperimental laboratorium yang diawali dengan proses ekstraksi secara maserasi menggunakan pelarut metanol 96%. Skrining fitokimia secara kualitatif dilakukan untuk mendeteksi keberadaan alkaloid, saponin, flavonoid, steroid, tanin, dan terpenoid. Pengujian aktivitas antioksidan dilakukan menggunakan metode ABTS dengan membandingkan nilai IC₅₀ ekstrak terhadap vitamin C. Hasil penelitian menunjukkan bahwa baik ekstrak daun segar maupun daun kering memberikan respons positif mengandung seluruh senyawa uji, yaitu flavonoid, alkaloid, tanin, steroid, terpenoid, dan saponin. Pada uji aktivitas antioksidan, ekstrak daun jambu biji kering menunjukkan aktivitas peredaman radikal yang lebih tinggi (nilai IC₅₀ lebih rendah) dibandingkan dengan ekstrak segar. Meskipun demikian, aktivitas antioksidan kedua ekstrak tersebut masih lebih rendah bila dibandingkan dengan vitamin C sebagai pembanding. Kesimpulannya, ekstrak metanol daun jambu biji berpotensi sebagai sumber antioksidan alami dengan profil senyawa aktif yang beragam.
Co-Authors Akram La Kilo Auli Irfah Dea Marsanda Condong Erga Kurniawati Erni Mohammad Haris Munandar Lukman A. R. Laliyo Mangara Sihaloho Masrid Pikoli Najmah Najmah Ramona Nintias R. Abas Siti Istiqomah Nggole Suleman Duengo Thayban, Thayban Vivi Dia Afrianti Sangkota Wiskawati Kuka