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All Journal Indonesian Journal of Educational Review (IJER) Jurnal Ilmiah BioSmart
Sonja VT Lumowa
Mulawarman University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology Languange, Linguistic, Communication & Media

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THE EFFECTIVENESS OF PROBLEM - BASED LEARNING MODEL LEARNING DEVICES Lismayuni Lismayuni; Vandalita MM. Rambitan; Sonja VT Lumowa
IJER - INDONESIAN JOURNAL OF EDUCATIONAL REVIEW Vol 7 No 02 (2020): Indonesian Journal of Educational Review
Publisher : Program Pascasarjana Universitas Negeri Jakarta

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Abstract

The purpose of this study is to find out what problems are faced by teachers when developing a Problem based learning (PBL) model of learning tools to improve student's critical thinking skills. This research was conducted at SMAIT Daarul Hikmah Bontang class X 1 and X 2. The sample of this study was 25 teachers in the school, the sample of this study was 5 teachers who taught exact subjects. Primary data collection using observation sheets related to Problem based learning (PBL) Model learning devices containing 25 questions. The results of the study show problems related to compiling learning tools through a problem-based learning model(PBL) it was found that some teachers had problems with references and did not understand learning models that were relevant to learning materials in schools, assessment instruments as supporters related to the problems faced when compiling a problem-based learning (PBL) model of learning tools. 80% of student learning outcomes experienced a more significant increase after using the problem-based learning (PBL) model.
THE EFFECT OF DIFFERENT LEARNING MODELS ON STUDENTS' SCIENTIFIC ATTITUDES AND CRITICAL THINKING SKILLS Anang Setyobudi; Didimus Tanah Boleng; Sonja VT Lumowa
IJER - INDONESIAN JOURNAL OF EDUCATIONAL REVIEW Vol 8 No 2 (2021): Indonesian Journal of Educational Review
Publisher : Program Pascasarjana Universitas Negeri Jakarta

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Abstract

This research aims to analyze (1) the influence of SETS and Contextual learning models on the Scientific Attitudes of students of class XI SMK Negeri 1 Telen and SMK Negeri 2 Bengalon, and (2) the influence of sets and contextual learning models on the critical thinking skills of students of class XI SMK Negeri 1 Telen and SMK Negeri 2 Bengalon, (3) the influence of sets and contextual learning models on scientific attitudes and critical thinking skills of students of class XI SMK Negeri 1 Telen and SMK Negeri 2 Bengalon simultaneously. The hypotheses tested were: (1) SETS and Contextual learning models affect the Scientific Attitudes of students of class XI SMK Negeri 1 Telen and SMK Negeri 2 Bengaland on, (2) SETS and Contextual learning models have an effect on the critical thinking skills of students of class XI SMK Negeri 1 Telen and SMK Negeri 2 Bengalon, (3) sets and contextual learning models affect scientific attitudes and critical thinking skills of students of class XI SMK Negeri 1 Telen and SMK Negeri 2 Bengalon Simultaneously. This type of research includes Quasi-Experimental Design. The target population is all students of class XI SMK Negeri 1 Telen and SMK Negeri 2 Bengalon Year of Study 2021/2022, the number of research samples as many as 77 students. Research instruments use scientific attitude questionnaires and tests of critical thinking skills. Research data were analyzed using MANCOVA's One Way statistical test. The results showed that: (1) There was no effect of sets and contextual learning model on the scientific attitude of students of class XI of SmK Negeri 1 Telen and SMK Negeri 2 Bengalon with partial eta squared value p2 = 0.3%. (2) There is an influence of sets and contextual learning models on the critical thinking skills of students of class XI SMK Negeri 1 Telen and SMK Negeri 2 Bengalon with partial eta squared values p2 = 86.61%, and (3) There is an influence of sets learning model and on scientific attitudes and critical thinking skills of students of class XI SMK Negeri 1 Telen and SMK Negeri 2 Bengalon simultaneously with partial value eta squared p2 = 76.90%.
Uji Efektifitas ekstrak daun jagung manis (Zea Mays) sebagai pestisida nabati terhadap mortalitas serangga hama wereng coklat(Nilaparvata leugris) Ricka Krisnawati; Sonja VT Lumowa; Sri Purwati
Jurnal Ilmiah BioSmart (JIBS) Vol. 12 No. 1 (2026): Jurnal Ilmiah BioSmart Volume 12 No. 1 2026
Publisher : Pendidikan Biologi Fakultas Keguruan dan Ilmu Pendidikan Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jibs.v12i1.4967

Abstract

Wereng cokelat (Nilaparvata lugens) merupakan serangga hama tanaman yang menyerang tanaman padi yang menyebabkan kerusakan pada bagian daun. Daun jagung (Zea mays L) merupakan bagian tanaman yang dapat digunakan sebagai pestisida nabati karena kandungan senyawa metabolit sekunder pada tanaman tersebut dapat dijadikan sebagai pestisida. Penelitian Ini bertujuan untuk mengetahui efektivitas ekstrak daun (Zea mays L) terhadap mortalitas serangga hama wereng cokelat (Nilaparvata lugens). Jenis Penelitian ini adalah penelitian eksperimen. Penelitian ini terdiri dari 1 kontrol (0 ppm), 3 perlakuan (4000 ppm, 6000 ppm dan 10000 ppm). Pada setiap perlakuan diujikan 10 serangga hama wereng cokelat (Nilaparvata lugens) stadia imago. Pembuatan ekstrak daun jagung manis (Zea mays L) dilakukan dengan metode meserasi menggunakan pelarut etanol 95%. Data yang diambil adalah tingkat mortalitas serangga hama wereng cokelat (Nilaparvata lugens) selama 24 jam setelah aplikasi dan dilanjutkan sampai 96 jam dari perlakuan ekstrak daunjagung manis (Zea mays L). Data yang diperoleh dianalisis dengan menggunakan analisis probit LC50. Dari hasil analisis probit diperoleh nilai LC50 24 jam sebesar 1800 ppm, LC50 48 jam sebesar 811,89 ppm, LC50 72 jam sebesar 364, 22 ppm dan LC50 sebesar 226,03 ppm. Rata-rata keseluruhan nilai LC50 dari 24 jam sampai 96 jam didapatkan nilai LC50 sebesar 800,535 ppm. Berdasarkan hasil pengamatan dan analisis data disimpulkan bahwa ekstrak daun jagung manis (Zea mays L) efektif terhadap mortalitas serangga hama wereng cokelat (Nilaparvata lugens)
Co-Authors Anang Setyobudi Didimus Tanah Boleng Lismayuni Lismayuni Ricka Krisnawati Sri Purwati Vandalita MM Rambitan