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Suparno Putera Makkadafi
Mulawarman University
Chemistry Education Mathematics

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Pengaruh Kombinasi Ekstrak Batang Brotowali (Tinospora crispa L.) dan Daun Belimbing Wuluh (Averrhoa bilimbi L.) Terhadap Intensitas Serangan Serangga Hama pada Tanaman Bayam Cabut (Amaranthus tricolor L.) var. Maestro Amelia Tya Nabila Amelia Tya Nabila; Sonja Verra Tinneke Lumowa; Zenia Lutfi Kurniawati; Suparno Putera Makkadafi
PendIPA Journal of Science Education Vol 10 No 3 (2026): July - September
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.10.3.705-713

Abstract

Pest infestations are one of the limiting factors in the cultivation of pull-up spinach, which can reduce crop quality and productivity. Pest control methods that still rely heavily on chemical pesticides have the potential to disrupt the environmental balance. The development of botanical pesticides is an approach that continues to be studied as a more ecological method of pest control. The stems of brotowali and the leaves of belimbing wuluh are known to contain bioactive compounds that have the potential to be utilized as botanical pesticide ingredients. This study aims to determine the effect of a combination of extracts from brotowali stems (Tinospora crispa L.) and belimbing wuluh leaves (Averrhoa bilimbi L.) on the intensity of pest insect attacks on Maestro variety spinach (Amaranthus tricolor L.) plants, as well as to determine the optimal concentration of the combination. This study is an experimental study using a non-factorial Randomized Block Design (RBD) with five treatment levels, namely 0% (control), 15%, 30%, 45%, and 60%, with five replicates. The observed parameter was the intensity of insect pest attacks based on the level of leaf damage at 14, 19, 24, 29, dan 34 day after sowing. The data were analyzed using analysis of variance (ANOVA) and followed by the Least Significant Difference (LSD) test at a 1% significance level. The results of the study showed that the calculated F-value at all observation time was greather than the critical F-value at the 1% level, thus the combination of brotowali stem extract and belimbing wuluh leaf extract had a highly significant effect on the intensity of pest insect attacks on Maestro variety spinach. The 60% concentration proved be the most effective in suppressing the intensity of pest insect attacks.
Hubungan Pengetahuan Kesehatan Reproduksi Siswa terhadap Sikap Pencegahan Penyakit Menular Seksual Di Kelas XI SMA Negeri 2 Samarinda Diah Pratiwi; Zenia Lutfi Kurniawati; Vandalita Maria Magdalena Rambitan; Suparno Putera Makkadafi
PendIPA Journal of Science Education Vol 10 No 3 (2026): July - September
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.10.3.714-720

Abstract

This study aims to analyze the relationship between reproductive health knowledge and attitudes toward the prevention of sexually transmitted diseases among students. This study employs a quantitative approach using a correlational method. Data collection was conducted by distributing questionnaires to students as research respondents. The obtained data were analyzed using normality tests and correlation product moment tests. The results indicate that the data are normally distributed. Based on the results of correlation product moment test, a correlation coefficient of 0.449 was obtained, which falls into the moderate category, indicating a positive relationship of moderate strength between reproductive health knowledge and attitudes toward the prevention of sexually transmitted diseases among students. This positive relationship suggests that the higher the level of reproductive health knowledge students possess, the better their attitudes toward preventing sexually transmitted diseases. The moderate strength of the association indicates that knowledge of reproductive health is not the only factor influencing attitudes toward the prevention of sexually transmitted infections.
Pengaruh Implementasi Project-Based Learning Berbasis Praktikum Sederhana Terhadap Hasil Belajar Kognitif Mata Pelajaran Biologi Pada Siswa Kelas XI SMA Negeri 1 Bongan Siti Maria Mawar Dinata; Masitah Masitah; Akhmad Akhmad; Suparno Putera Makkadafi; Oktavianus Tae B.N
PendIPA Journal of Science Education Vol 10 No 3 (2026): July - September
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.10.3.775-781

Abstract

Biology learning equipped with practicum can help students develop a further way of thinking. Based on the results of observations at SMA Negeri 1 Bongan, it is known that Biology activities have not been carried out optimally due to the limited facilities and infrastructure in the school. This study aims to determine the effect of the implementation of Project-Based Learning (PjBL) model based on simple practicum on the cognitive learning outcomes of Biology subjects in grade XI students of SMA Negeri 1 Bongan. This study uses a quantitative approach with the Quasi Experimental Design method and the Pre-test–Post-test Non-Equivalent Control Group Design design. The research sample consisted of 40 students divided into an experimental class and a control class, each totaling 20 students, with a sampling technique using purposive sampling. Data collection was carried out through cognitive learning outcome tests in the form of Pre-test and Post-test. Data analysis included the Shapiro-Wilk normality test, the Levene's Test homogeneity test, the N-Gain test, and the hypothesis test using the Mann-Whitney U Test. The results showed that the average Pre-test score of the  experimental class was 50.5 and the control class was 49, while the average Post-test score of the  experimental class was 82.75 and the control class was 77.5. The results of the N-Gain calculation showed that the experimental class obtained an average score of 0.67 and the control class 0.56, both of which were in the medium category. The results of the Mann-Whitney test on the Post-test data obtained a significance value (Sig. 2-tailed) of 0.028 < 0.05. Thus, it can be concluded that the implementation of Project-Based Learning based on simple practicum has a significant effect on the cognitive learning outcomes of Biology subjects in grade XI students of SMA Negeri 1 Bongan.
Co-Authors Akhmad Akhmad Amelia Tya Nabila Amelia Tya Nabila Diah Pratiwi Masitah Masitah Oktavianus Tae B.N Siti Maria Mawar Dinata Sonja Verra Tinneke Lumowa Vandalita Maria Magdalena Rambitan Zenia Lutfi Kurniawati