Ardiani Samti Nur Azizah
Universitas Negeri Malang, Jalan Semarang No. 5 Malang

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Critical thinking skills: The academic ability, mastering concepts, and analytical skill of undergraduate students Permana, Tutut Indria; Hindun, Iin; Rofi'ah, Ndzani Latifatur; Azizah, Ardiani Samti Nur
Jurnal Pendidikan Biologi Indonesia Vol 5, No 1 (2019): MARCH
Publisher : University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (738.857 KB) | DOI: 10.22219/jpbi.v5i1.7626

Abstract

Science and technology development in the 21st-century has been demanding educators to provide learning activities which stimulate students’ critical thinking skills. This study aimed to find out the correlated factors of the students’ critical thinking skills as well as of which was the strongest determinant in leveling the skills. The subject of this correlational research was 112 undergraduate students in the Department of Biology Education, Universitas Muhammadiyah Malang who took Botany course. There were four variables measured in this study, namely academic ability, mastering concepts, analytical skill, and critical thinking skills. The data of academic ability was obtained from students' cumulative index in the previous semester while the three other variables were measured using final exam test. All of the variables then analyzed using multiple linear regression. The results showed that the three predictor variables (mastering concepts, academic ability, and analytical skill) gave effective contributions toward students’ critical thinking skills, with the percentages of 3.84%, 32.25%, and 54.26% respectively. Therefore, the results of this study could be a basic reference in designing learning process which empower the students’ critical thinking skills.
Perbandingan Efektivitas Larvasida Ekstrak Kulit dan Daging Buah Sawo (Manilkara zapota) terhadap Kematian Nyamuk Aedes aegypti Trisnawati, Ade; Azizah, Ardiani Samti Nur
CHEESA: Chemical Engineering Research Articles Vol. 2 No. 2 (2019)
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (651.594 KB) | DOI: 10.25273/cheesa.v2i2.5495

Abstract

Demam berdarah merupakan salah satu permasalahan kesehatan masyarakat yang penyebarannya dilakukan oleh nyamuk Aedes aegypti. Upaya pemberantasan nyamuk Aedes aegypti khususnya pada fase larva dapat dilakukan dengan menggunakan larvasida yang berasal dari bahan alam. Salah satu bahan alam yang berpotensi sebagai larvasida adalah buah sawo. Kulit dan daging buah sawo muda diketahui memiliki kandungan senyawa bioaktif yaitu tanin, flavonoid, dan alkaloid. Tujuan penelitian ini adalah untuk mengetahui perbandingan efektivitas larvasida pada ekstrak kulit dengan ekstrak daging buah sawo muda terhadap kematian larva Aedes aegypti. Desain penelitian yang digunakan adalah eksperimental. Konsentrasi ekstrak yang digunakan yaitu 0 ppm (kontrol negatif), 2500 pp, 5000 ppm, 7500 ppm, 10000 ppm, 12500 ppm, 15000 ppm dan 20000 ppm. Sampel yang digunakan yaitu larva Aedes aegypti instar III sebanyak 10 larva dan diamati selama 24 jam dengan tiga kali pengulangan. Uji yang digunakan yaitu uji regresi dan uji perbedaan. Hasil uji regresi menunjukkan bahwa pengaruh pemberian ekstrak kulit buah sawo (54,7 %) lebih rendah dari ekstrak daging buah sawo (64,3 %) dalam membunuh larva uji. Hasil uji perbedaan pada konsentrasi selain 7500 ppm didapatkan nilai p < 0,05 hal ini menandakan terdapat perbedaan rata-rata kematian pada kelompok ekstrak kulit dan daging buah sawo.