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All Journal BioEksakta : Jurnal Ilmiah Biologi Unsoed Bioeduca : Journal of Biology Education
Lutvia Krismayanti
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology Veterinary

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Unveiling the Impact of Problem-Based Learning on Students’ Science Process Skills and Cognitive Outcomes Muttaqin Kurniawan; Lestariani, Nurlita; Lutvia Krismayanti
Bioeduca : Journal of Biology Education Vol. 7 No. 1 (2025): Bioeduca : Journal of Biology Education
Publisher : Universitas Islam Negeri Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/bioeduca.v7i1.23225

Abstract

Problem-based learning (PBL) is an approach based on real-world problems that trains students to think scientifically, conduct investigations, and construct knowledge logically based on evidence. Through empirical experiences and complex problem-solving, students can improve their SPS and learning outcomes. This study aims: 1) to determine the effect of a PBL model on SPS and cognitive learning outcomes; 2) to determine the relationship between SPS and cognitive learning outcomes among students at MAN 1 West Lombok. This research method is a quantitative type of quasi-experimental research with a non-equivalent posttest control group design. The sample was 50 students in class X. The research instrument used observation sheets and tests. The data were analyzed using Manova and simple linear regression. Research has shown that PBL has a positive and significant effect on students’ SPS and cognitive learning outcomes. Furthermore, SPS play a mediating role between PBL and cognitive learning outcomes. PBL enhances students’ SPS, which in turn positively influence their learning outcomes
Pengaruh Ekstrak Daun Beberas (Chloranthus officinalis) sebagai Repelan Nyamuk Aedes aegypti Sukmin Sukmin; Munawir Sazali; Lutvia Krismayanti
BioEksakta : Jurnal Ilmiah Biologi Unsoed Vol 8 No 2 (2026): BioEksakta
Publisher : Fakultas Biologi Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.bioe.2026.8.2.20783

Abstract

Nyamuk Aedes aegypti merupakan vektor beberapa penyakit, seperti demam berdarah dengue (DBD), zika, chikungunya. Tujuan dilakukannya penelitian ini untuk melihat ada tidaknya pengaruh ekstrak daun beberas (Chloranthus officinalis) sebagai repelan terhadap nyamuk Aedes aegypti. Penelitian dilakukan di laboratorium terpadu Universitas Islam Negeri Mataram dengan metode eksperimental. Ekstrak daun beberas diformulasikan dalam bentuk larutan dengan tiga variasi konsentrasi, 10%, 20%, dan 30%, disertai kontrol positif dan kontrol negatif. Setiap perlakuan dilakukan pengulangan sebanyak 4 kali. Dalam setiap ulangan digunakan 5 ekor nyamuk dewasa berumur 2-5 hari, dipuasakan selama 12 jam sebelum dilakukan pengujian. Parameter yang diamati adalah frekuensi hinggap nyamuk pada kain uji dalam jangka waktu 30 menit. Data dianalisis menggunakan uji ANOVA, dilanjutkan dengan uji Tukey untuk mengetahui perbedaan antar perlakuan. Hasil penelitian menunjukkan bahwa ekstrak daun beberas mampu menurunkan frekuensi hinggap sekaligus meningkatkan daya tolak nyamuk. Total frekuensi hinggap pada konsentrasi 10%, 20%, dan 30% berturut-turut sebesar 59, 37, dan 19, lebih rendah dibandingkan kontrol negatif (128), dengan persentase daya tolak masing-masing 54%, 71%, dan 85%, serta mendekati kontrol positif (98%). Semakin tinggi konsentrasi ekstrak maka semakin rendah frekuensi hinggap nyamuk dan semakin tinggi daya tolaknya. Dengan begitu, penelitian ini dapat memberikan kontribusi dalam pengembangan repelan nabati yang lebih ramah lingkungan. Kata kunci: Aedes aegypti, Bioinsektisida, Chloranthus officinalis, Repelan
Co-Authors Lestariani, Nurlita Munawir Sazali Muttaqin Kurniawan Sukmin Sukmin