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All Journal Biocaster : Jurnal Kajian Biologi
Masitah Masitah
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.
Pengaruh Pendekatan STEM-SDGs terhadap Keterampilan Saintifik Siswa dan Hasil Belajar Materi Sistem Ekskresi di SMA Islam Samarinda Nafisahtul Huda; Ruqoyyah Nasution; Vandalita Maria Magdalena Rambitan; Masitah Masitah; Zenia Lutfi Kurniawati; 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.v5i4.622

Abstract

This study aims to determine the influence of the STEM-SDGs approach on improving scientific skills and student learning outcomes on Excretory System material at SMA Islam Samarinda. This study uses a quasi experiment method with a non-equivalent control group design. The research sample was selected through a purposive sampling technique consisting of two groups, namely the experimental class of 26 students and the control class of 26 students. Data analysis was carried out using an independent sample t-test. The results of the study show that the STEM-SDGs approach has a significant effect on improving students' scientific skills, especially in the aspects of observing, reasoning, and communicating, as well as on learning outcomes shown through improving post-test scores. The engineering aspect is the most influential component, because it trains students to design and create projects based on the use of used goods according to the SDGs. Thus, it can be concluded that the STEM-SDGs approach is effective in improving students' scientific skills and learning outcomes through integrative and contextual project-based learning.
Pengaruh Model Pembelajaran Problem Based Learning Terintegrasi STEAM terhadap Literasi Sains Siswa pada Mata Pelajaran IPA Biologi Kelas VII di SMP Negeri 37 Samarinda Selvi Novita Sari; Vandalita Maria Magdalena Rambitan; Masitah Masitah; Sri Purwati; 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.v5i4.629

Abstract

The low science literacy of Indonesian students in the PISA study requires learning innovations that emphasize mastery of science concepts and their application in daily life. This study aims to determine the influence of the STEAM (Science, Technology, Engineering, Arts, and Mathematics) integrated Problem Based Learning (PBL) learning model on students' science literacy in the Biology Science subject grade VII at SMP Negeri 37 Samarinda. This study is a quasi experiment with a randomized pretest-posttest control group design. The research sample was obtained through a cluster random sampling technique consisting of class VII E as the experimental class and VII F as the control class. Data analysis includes normality test, homogeneity test, t-test, and N-Gain test. The results showed that the application of the STEAM integrated PBL model had a significant effect on improving students' science literacy as shown by the results of the t-test with a significance value of 0.000 (< 0.05). Thus, it can be concluded that the STEAM integrated PBL model is effective in improving students' science literacy. These findings indicate that the model could be an innovative and relevant alternative learning strategy to be implemented in secondary schools.
Identifikasi Serangga Hama pada Tanaman Cabai Rawit (Capsicum frutescens L.) pada Fase Generatif di Lahan Tani Air Terjun Pinang Seribu Kelurahan Sempaja Utara Samarinda Tanti Widiyanti; Sonja Verra Tinneke Lumowa; Masitah Masitah; Sri Purwati
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.v5i4.634

Abstract

Cayenne pepper (Capsicum frutescens L.) is a horticultural commodity with high economic value that is widely consumed by the Indonesian people, but is susceptible to various types of pests, especially in the generative phase. This study aims to identify the type and dominance of insect pests that attack cayenne pepper plants in the generative phase in the farmland of Thousand Pinang Waterfall, North Sempaja Village, Samarinda. The research methods used include direct observation and insect collection using several types of traps (insect nets, light traps, and pitfall traps). Identification is carried out down to the family level with the help of a keybook of determination and morphological character of insects. The results of the study showed the existence of several insect pest families such as Tephritidae (fruit flies), Thripidae (thrips), Aphididae (aphids), and Bemisiidae (whiteflies) that were dominant during the generative phase of the plant. So it can be concluded that cayenne pepper plants in the generative phase in the farmland of the Thousand Pinang Waterfall, Samarinda, are vulnerable to being attacked by various types of insect pests. This is important to support a more precise and effective pest control strategy in the critical phase of the growth of cayenne pepper plants.
Pengaruh Model Pembelajaran Problem Based Learning Berbasis TPACK terhadap Keterampilan Bertanya Siswa pada Mata Pelajaran Biologi Materi Sel Kelas XI MAN 2 Samarinda Khairunnisa Salsabila Ramadhani; Masitah Masitah; Herliani Herliani; Nelda Anasthasia Serena; Akhmad Akhmad
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.v5i4.693

Abstract

The background of this research is learning models that are limited in variation, which makes the students less active, especially in questioning skills. Because of that, this research has a purpose to find out the effect of implementing the Problem Based Learning (PBL) model based on Technological Pedagogical and Content Knowledge (TPACK) on students questioning skills. This research used a quantitative approach with a quasi experimental method and a non- equivalent control group design. The subjects of this research are 70 grade XI students in MAN 2 Samarinda, including class XI-B as the experimental class and class XI-A as the control class. The instruments used in this research are interviewing the teacher, observing the learning activities, and an assessment rubric of students questioning skills. The results of this research showed that students questioning skills in the experimental class increased significantly compared to the control class, as shown by the Mann-Whitney U test with a significance value of 0.015 < 0.05. The number of questions from students in the experimental class was more varied (20 questions) compared to the control class, which had fewer questions (5 questions). The conclusion is that the implementation of the TPACK based Problem Based Learning (PBL) model has a positive effect on students questioning skills in the cell material of Grade XI.
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.
Pengaruh Eco-Enzyme sebagai Nutrisi terhadap Pertumbuhan Tanaman Selada Hijau (Lactuca sativa) pada Metode Hidroponik Sistem Wick di Kota Samarinda Roza Adnan Sofian; Zenia Lutfi Kurniawati; Dora Dayu Rahma Turista; Sri Purwati; Masitah Masitah
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.v5i4.713

Abstract

Green lettuce (Lactuca sativa) is a horticultural crop that is becoming increasingly popular due to its high nutritional content. This plant plays an important role in improving the nutritional intake of the community. This study aimed to determine the effect of using eco-enzyme on the growth of green lettuce plants and to identify the best concentration. The research was conducted from June to August 2025 on a limited area using the wick hydroponic system located on Jalan Abdul Wahab Syahrani, Gang Wangi, Gunung Kelua, Air Hitam, Samarinda City, East Kalimantan Province. This study used a Randomized Block Design (RBD) consisting of five treatments, each repeated five times, namely: P0 (control/1 L), P+ (control plus/AB mix 10 ml/L), P1 (EE 10 ml/L), P2 (EE 15 ml/L), and P3 (EE 20 ml/L). Data on plant height and number of leaves were analyzed using Two-way Multivariate Analysis of Variance (Two-way MANOVA) followed by the Bonferroni test at a 5% significance level. Meanwhile, the data on fresh weight were analyzed using One-way Analysis of Variance (One-way ANOVA). The results showed that eco-enzyme treatment had a significant effect on plant height, number of leaves, and fresh weight of green lettuce, with the best concentration obtained from treatment P1 (EE 10 ml/L).
Co-Authors Akhmad Akhmad Dora Dayu Rahma Turista Herliani Herliani Jailani Jailani Khairunnisa Salsabila Ramadhani Nafisahtul Huda Nelda Anasthasia Serena Nur Istikhomah Oktavia Nuraisa Roza Adnan Sofian Ruqoyyah Nasution Selvi Novita Sari Sonja Verra Tinneke Lumowa Sri Purwati Suparno Putera Makkadafi Tanti Widiyanti Vandalita M. M. Rambitan Vandalita Maria Magdalena Rambitan Zenia Lutfi Kurniawati