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All Journal Biocaster : Jurnal Kajian Biologi
Jailani Jailani
Program Studi Pendidikan Biologi, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Mulawarman, Jalan Muara Pahu, Samarinda, Kalimantan Timur 75119, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology

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Pengaruh Model Project Based Learning (PjBL) terhadap Kemampuan Berpikir Kritis dan Hasil Belajar Siswa pada Materi Sel Nur Istikhomah; Masitah Masitah; Zenia Lutfi Kurniawati; Vandalita M. M. Rambitan; Jailani Jailani; Akhmad Akhmad
Biocaster : Jurnal Kajian Biologi Vol. 6 No. 1 (2026): January
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v6i1.785

Abstract

The low critical thinking skills and student learning outcomes in science learning are still the main problems in schools. This study aims to determine the influence of the Project Based Learning (PjBL) learning model on the learning outcomes and critical thinking skills of grade VIII students on animal cell and plant cell materials at SMP Muhammadiyah 6 Samarinda. This study uses a quantitative method with a quasy experimental nonequivalent control group design. The sample totaled 50 students consisting of 25 students in the experimental class and 25 students in the control class. The research instrument is in the form of an essay test consisting of 10 questions. The results showed that the average post-test learning outcomes of the experimental class were higher (82.6) than the control class (59.2). In critical thinking skills, the experimental class obtained an average of 81.8 with the very good category, while the control class obtained 50.5 with the fair category. The results of the t-test showed a significant difference between the two classes (sig. < 0.05). Thus, the application of the Project Based Learning (PjBL) learning model can be recommended to improve critical thinking skills in science learning in junior high school.
Efektivitas Kombinasi Daun Gamal (Gliricidia sepium) dan Buah Bintaro (Cerbera manghas) sebagai Insektisida Alami terhadap Tanaman Terong (Solanum melongena) Auliya Khusnul Hotimah; Ruqoyyah Nasution; Jailani Jailani; Nelda Anasthasia Serena
Biocaster : Jurnal Kajian Biologi Vol. 5 No. 4 (2025): October
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v5i4.623

Abstract

The excessive use of chemical pesticides has a negative impact on the environment and health, so a more environmentally friendly pest control alternative is needed. This study aims to determine the effectiveness of the combination of gamal leaf extract (Gliricidia sepium) and bintaro fruit (Cerbera manghas) as a vegetable insecticide against pests in eggplant (Solanum melongena). The research method used pure experiments with a Complete Random Design (RAL) of five concentration treatments, namely 0% (control), 10%, 30%, 50%, and 70%. The observation data was analyzed using the ANOVA test. The results showed that the combination of gamal leaf extract and bintaro fruit had a significant effect in suppressing pest populations in eggplant plants, with a Fcal value of 11.750 and a significance value of 0.000 (< 0.05). The 70% concentration is the most effective treatment in reducing the intensity of pest attacks compared to other treatments and controls. This success is supported by the content of bioactive compounds, such as flavonoids, saponins, alkaloids, and cerberins that act as contact poisons and stomach toxins in the target insects. These findings suggest that the combination of the two extracts could be a safe, economical, and sustainable alternative to plant insecticides to support the cultivation of horticultural crops without relying on synthetic chemical pesticides.
Implementasi Flipbook Materi Sistem Pertahanan Tubuh untuk Mendukung SDGs pada Hasil Belajar Siswa SMAN 2 Tenggarong Edita Destyara; Ruqoyyah Nasution; Jailani Jailani; Nelda Anasthasia Serena; Vandalita Maria Magdalena Rambitan
Biocaster : Jurnal Kajian Biologi Vol. 5 No. 4 (2025): October
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v5i4.630

Abstract

The low level of students' understanding of Biology material, especially on the topic of the body's defense system, is often caused by limitations in the variety of learning media used. This study aims to analyze the effect of the use of flipbook-based learning media on student learning outcomes on body defense system materials, in order to support the implementation of the Sustainable Development Goals (SDGs) at SMA Negeri 2 Tenggarong. This study uses a quasi-experimental approach with purposive sampling techniques, involving 35 students divided into experimental and control groups. The research instrument consists of learning outcome tests and questionnaires, which are used to measure students' cognitive achievement. Data analysis was carried out through hypothesis tests using independent sample t-test and N-gain calculation. The results showed a significant difference between the experimental and control groups, with a significance value of the t-test of 0.00 (< 0.05), and an N-gain value of 0.73 which was categorized as a fairly effective improvement. Flipbook media has been proven to have a positive influence on student learning outcomes in the experimental group. The increase was influenced by internal and external factors, including the quality of flipbook content, the support of learning facilities, and students' motivation and interest in learning. Thus, flipbook learning media can be considered an effective alternative in increasing students' understanding of the body defense system material, as well as contributing to improving the quality of education in line with the Sustainable Development Goals (SDGs).
Pengaruh E-Module Sistem Pernapasan Berbasis Praktikum terhadap Hasil Belajar untuk Menunjang SDGs 3 Siswa Kelas XI SMA Negeri 13 Samarinda Adinda Devi Nofalia; Ruqoyyah Nasution; Vandalita Maria Magdalena Rambitan; Jailani Jailani; Suparno Putera Makkadafi
Biocaster : Jurnal Kajian Biologi Vol. 5 No. 4 (2025): October
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v5i4.675

Abstract

Technological progress requires innovation in all components of education, one of which is by integrating the Sustainable Development Goals (SDGs) into learning through practicum-based breathing system e-modules. This study aims to analyze the influence of practicum-based respiratory system e-modules on the learning outcomes of grade XI students of SMA Negeri 13 Samarinda in the cognitive, affective, and psychomotor domains in supporting the achievement of SDGs 3. The research method used a quasi experiment type of non-equivalent control group with two subjects (30 students each), one class as an experiment and one class as a control. Instruments include cognitive tests (pretest–posttest) as well as affective and psychomotor observations. Cognitive data analysis used an independent t-test, while affective and psychomotor were analyzed descriptively and converted to qualitative categories. The results showed significant differences in cognitive learning outcomes (sig. 0.000 < 0.05). The affective learning outcomes of both classes were in the good category, with the experimental class showing a higher score of 78.89, while the control class was 74.11. The psychomotor learning outcomes of the experimental class were in the skilled category with an average of 75.09, while the control class was quite skilled with an average of 69.17. Therefore, it is concluded that practicum-based e-modules are effective in improving learning outcomes while fostering health and environmental awareness in accordance with SDGs 3.
Pengaruh Model Pembelajaran POE terhadap Sikap Ilmiah dan Keterampilan Proses Sains Siswa Kelas XI MA Negeri 1 Samarinda Oktavia Nuraisa; Sri Purwati; Masitah Masitah; Jailani Jailani; Zenia Lutfi Kurniawati
Biocaster : Jurnal Kajian Biologi Vol. 5 No. 4 (2025): October
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v5i4.695

Abstract

The average biology learning outcomes of eleventh-grade students at MA Negeri 1 Samarinda are still below the Minimum Completion Criteria (KKM), while innovative learning models such as POE (Predict-Observe-Explain) have never been implemented. Biology learning has been mostly based on lectures, discussions, assignments, and practicums, while scientific attitude assessments are only taken from daily life and practicum activities. This condition requires the implementation of a model that can actively involve students to encourage scientific attitudes and science process skills (SPS). This study aims to determine the effect of the POE model on the scientific attitudes and SPS of eleventh-grade students on the sensory system material. The method used is a quasi-experimental design with a Nonequivalent Control Group Design, involving class XI-F as the experiment and XI-D as the control. The research instruments are scientific attitude questionnaires and SPS tests. The results of the analysis show significant differences between the experimental and control classes in scientific attitudes (p < 0.05) and SPS (p < 0.05 with the Mann Whitney U test). Improvements in scientific attitudes were demonstrated by an N-gain of 0.35 (moderate) in the experimental class and 0.19 (low) in the control class. Meanwhile, the N-gain of the Student-Based Learning (KPS) reached 0.60 (moderate) in the experimental class and 0.29 (low) in the control class. The conclusion of this study is that the POE model effectively improves the scientific attitudes and science process skills of eleventh-grade students at MA Negeri 1 Samarinda.
Co-Authors Adinda Devi Nofalia Akhmad Akhmad Auliya Khusnul Hotimah Edita Destyara Masitah Masitah Nelda Anasthasia Serena Nur Istikhomah Oktavia Nuraisa Ruqoyyah Nasution Sri Purwati Suparno Putera Makkadafi Vandalita M. M. Rambitan Vandalita Maria Magdalena Rambitan Zenia Lutfi Kurniawati