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All Journal Journal of Biology Learning Bioscientist : Jurnal Ilmiah Biologi
Halim, Ilham Surya
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology Social Sciences

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Effectiveness Stimulus Environment Problem Solving Learning Model for Increase High-level Thinking Skills Kusumadani, Annur Indra; Rahmadani, Salsabila Nur; Halim, Ilham Surya
Journal of Biology Learning Vol. 6 No. 1 (2024): March 2024
Publisher : Universitas Veteran Bangun Nusantara Sukoharjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32585/jbl.v6i1.5359

Abstract

Learning with Stimulus Environment Problem Solving (SEPS) is an involved learning process student in a way active good in network nor outside network in reading, writing, doing experiment, and analyze, as well look for solution to the problem social related science environment public.  This study aims to know the effectiveness of the Stimulus Environment Problem Solving (SEPS) learning model so that can increase ability think level high among students biology education Universitas Muhammadiyah Surakarta. Method in study this is correlate ability think critical and solving problem 2 groups student a total of 40 students where is one group totaling 20 students use learning model of Stimulus Environment Problem Solving (SEPS) and other groups with Project based Learning. Analysis hypothesis using the t test and effect size. Based on application of the Stimulus Environment Problem Solving (SEPS) model in the classroom experiment experience increase in t test results significant in cycle I and cycle II. Based on the effect size test, the effectiveness of the Stimulus Environment Problem Solving (SEPS) model is included in category tall with value 3.244 so effectiveness of the Stimulus Environment Problem Solving (SEPS) model on Skills think level tall own category tall.
Skrining Bakteri Lipolitik Pendegradasi Polystrene (PS) dari TPU Bonoloyo, TPS Makam Haji, dan Aliran Sungai Bengawan Solo Halim, Ilham Surya; Rahayu, Triastuti
Bioscientist : Jurnal Ilmiah Biologi Vol 12, No 1 (2024): June
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v12i1.11428

Abstract

Waste is an environmental problem caused by the activities of living things. The synthetic waste group or what is often found in the form of plastic and the like is a group of waste that is very difficult to degrade. This can be overcome by using lipolytic bacteria. This research aims to analyze lipolytic bacteria which can be used to biodegrade plastic waste in the Bonoloyo TPU, Makam Haji TPS, and the Bengawan Solo river flow. This research uses quantitative descriptive methods. Screening for lipolytic bacteria degrading polystyrene (PS) showed that the highest population of lipolytic bacteria isolated from public burial places of 15.6 x 104. Meanwhile, lipolytic screening with the highest average clear zone formed was 0.641 cm which came from TPS 1, then average -The highest average lipolytic index came from SBS 2 with a figure of 1.6525 cm, the largest average colony diameter came from TPS 1 soil samples at 0.45 cm. The degradative nature of bacteria on plastic above shows that the Bengawan Solo river has microbes with the highest ability compared to microbes from TPS and TPU, namely 22.42%. The degradation between TPU, SBS, and TPS is significantly the same. PS degradation in Bonoloyo TPU shows significant physical changes.
Co-Authors Annur Indra Kusumadani Rahmadani, Salsabila Nur Triastuti Rahayu