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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Bioscientist : Jurnal Ilmiah Biologi
Astija
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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Pengembangan E-Modul Eco-Enyzme untuk Mahasiswa MK Botani Ekonomi Hortikultura Prodi Pendidikan Biologi UNTAD Lestari M. P. Alibasyah; Astija; Isnainar; Vita Indri Febriani; Akram; Dwi Setyorini
Jurnal Penelitian Pendidikan IPA Vol 11 No 11 (2025): November
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i11.12805

Abstract

Learning in the Economic Botany and Horticulture course is still dominated by lectures, resulting in limited student procedural skills and the absence of structured teaching materials. This study aims to develop and evaluate an eco-enzyme e-module to improve conceptual understanding, practical competence, and learning effectiveness. Using a Research and Development (R&D) approach with the ADDIE model, the study involved expert validation, a limited trial with one class, and pre-test/post-test assessment. Data was analyzed through descriptive validation scores, practicality ratings, and N-gain effectiveness. Results show that expert validation yielded very feasible scores for content (90%), media (88%), and instructional design (86%). The practicality test produced a very practical overall score of 87%, indicating high usability, readability, visual appeal, accessibility, and engagement. Implementation of the e-module increased students’ mean score from 62.4 (pre-test) to 91.2 (post-test), generating an N-gain of 0.77 categorized as high effectiveness. The e-module successfully integrates conceptual explanations, fermentation procedures, multimedia features, and project-based activities related to eco-enzyme production. In conclusion, the eco-enzyme e-module is valid, practical, and effective for supporting independent learning and enhancing students’ conceptual and procedural skills in accordance with the course learning outcomes.
Hydrilla verticillata Density as a Bioindicator of Pollution in the Waters of Lake Talaga, Dampelas District Azizatul Khasanah; Astija; Amalia Buntu; Aan Febriawan; Mursito S. Bialangi; Vita Indri Febriani
Bioscientist : Jurnal Ilmiah Biologi Vol. 14 No. 1 (2026): March
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.v14i1.19908

Abstract

This study aimed to determine the density of Hydrilla verticillata in Lake Talaga and to evaluate its potential as a bioindicator of changes in water quality caused by domestic pollution. The study was conducted at three stations, where physicochemical parameters were measured, including temperature, pH, light intensity, turbidity, dissolved oxygen, and the heavy metals Pb, Fe, and Cu. The results showed that water temperature ranged from 26 to 28°C and dissolved oxygen from 8.04 to 8.49 mg/L, indicating conditions that still support aquatic life. Heavy metal concentrations were below the established water quality standards. However, the pH was categorized as highly alkaline, and the highest turbidity was recorded at the station located near residential areas, suggesting environmental pressure associated with domestic activities. The density of Hydrilla verticillata varied among stations, reaching 607,333.3 ind/ha at Station II (high category), 180,000 ind/ha at Station I (moderate category), and 6,066 ind/ha at Station III (low category). The high density observed in the residential area indicates nutrient enrichment that may stimulate excessive growth of aquatic vegetation. This condition suggests symptoms of eutrophication and indicates that Lake Talaga is experiencing localized light to moderate pollution. Therefore, the density of Hydrilla verticillata has strong potential to be used as a bioindicator for assessing changes in water quality.
The Effect of Providing Lecture Recordings on Self-Regulated Learning in Online Learning Vita Indri Febriani; Astija
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.v14i2.20370

Abstract

This study aimed to examine the effect of providing lecture recordings on students’ self-regulated learning (SRL) in online learning contexts characterized by unstable internet connectivity and limited access to course materials. A quasi-experimental pretest–posttest design was employed involving 52 students from the Biology Education Study Program at Tadulako University, with 26 students assigned to the control group and 26 to the treatment group. SRL data were collected using a questionnaire adapted from the Motivated Strategies for Learning Questionnaire (MSLQ), comprising five subscales: metacognition, time and study environment management, effort regulation, elaboration, and help-seeking. Students in the treatment group received YouTube links to lecture recordings via WhatsApp within 24 hours after each session, whereas those in the control group attended lectures without access to the recordings. Analysis of Covariance (ANCOVA), with pretest scores as the covariate, showed a significant difference in posttest composite SRL scores between the groups (F(1,49) = 32.806; p < 0.001; η²p = 0.401). Significant effects were also found for metacognition (η²p = 0.394), time management (η²p = 0.173), effort regulation (η²p = 0.153), and elaboration (η²p = 0.100), while help-seeking showed no significant difference. These findings suggest that providing lecture recordings through familiar and easily accessible platforms is an effective low-cost pedagogical strategy for enhancing students’ SRL in online learning environments with infrastructural constraints. Therefore, lecture recordings should be considered by lecturers and study program administrators when designing online instruction that supports students’ autonomous learning.
Effect of the Think Talk Write Cooperative Learning Model Assisted by Poster Media on Students’ Learning Outcomes in Biology Among Grade VIII Students at SMP Negeri 19 Palu Nuraziza Z Al Hadar; Astija; Moh. Sabran; Bustamin; Isnainar; Mursito S. Bialangi
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.v14i2.20718

Abstract

This study aimed to examine the effect of a poster-assisted Think Talk Write cooperative learning model on eighth-grade students’ learning outcomes in biology at SMP Negeri 19 Palu. A quasi-experimental method was employed using a nonequivalent control group design. The study involved two classes selected through purposive sampling: Class VIII A, consisting of 31 students, served as the control group, while Class VIII C, consisting of 28 students, served as the experimental group. Data were collected using a multiple-choice achievement test. The findings showed that the poster-assisted Think Talk Write cooperative learning model had a significant effect on students’ learning outcomes in the topic of the excretory system. The Mann–Whitney U test comparing the posttest scores of the experimental and control groups yielded an Asymp. Sig. (two-tailed) value of 0.001, which was lower than the significance level of 0.05. This result indicated a statistically significant difference between the two groups after the intervention. Furthermore, the experimental group achieved a mean normalized gain of 73% (g = 0.73), which was higher than that of the control group, which achieved 55% (g = 0.55). These findings demonstrate that the poster-assisted Think Talk Write learning model significantly improves students’ biology learning outcomes. Therefore, this model may be considered an effective alternative instructional strategy for enhancing student achievement.
Co-Authors Aan Febriawan Akram Amalia Buntu Azizatul Khasanah Bustamin Dwi Setyorini Isnainar Lestari M. P. Alibasyah Mursito S. Bialangi Nuraziza Z Al Hadar Vita Indri Febriani