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All Journal Journal of Biology Education Journal of Biobased Chemicals (JOBC) Jurnal Edutrained : Jurnal Pendidikan dan Pelatihan
Ichya Musytafizur Ziqri
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Religion Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Social Sciences

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EFEKTIVITAS MODEL PEMBELAJARAN CREATIVE PROBLEM SOLVING PADA MATERI SISTEM PERNAPASAN DI SMAN 1 JATIBARANG BREBES Ziqri, Ichya Musytafizur; Supriyanto, Supriyanto
Journal of Biology Education Vol 3 No 3 (2014)
Publisher : Journal of Biology Education

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

AbstractPurpose of this study is to determine the effectiveness of the application of the Creative Problem Solving in the respiratory system of learning material in SMAN 1 Jatibarang Brebes.The study was conducted with one- shot case study design. The study population was all students of class XI of SMAN 1 Jatibarang Brebes school year 2013/2014. The sample was 2 class, XI Science 1 and XI Science 2. Procedure research: preparation, execution, data collection , and data analysis. Method of data collection: observation sheets, final test, the results of discussions and questionnaires.Methods of data analysis: descriptive quantitative and qualitative.The results of the study were taken in the form of activities and student learning outcomes. Proven by the achievement of mastery learning which amounted to 93.94 % and student activity is high and very high with a percentage of 80.02 %. Based on the results of the study concluded that learning by using the Creative Problem Solving model of learning material in the respiratory system SMAN 1 Jatibarang Brebes can be applied because it proved effective .  Abstrak Penelitian ini bertujuan untuk mengetahui keefektifan penerapan model Creative Problem Solving dalam pembelajaran materi sistem pernapasan di SMAN 1 Jatibarang Brebes. Penelitian dilakukan dengan desain one shot case study. Populasi penelitian adalah seluruh siswa kelas XI SMAN 1 Jatibarang Brebes tahun ajaran 2013/2014. Sampel penelitian ini adalah 2 kelas dari 3 kelas yaitu kelas XI IPA 1 dan XI IPA 2. Prosedur penelitian: persiapan, pelaksanaan, pengambilan data, dan analisis data. Cara pengambilan data: lembar observasi, tes akhir, hasil diskusi dan angket. Metode analisis data: deskriptif kuantitatif dan kualitatif. Hasil penelitian yang diambil berupa aktivitas dan hasil belajar siswa. Pencapaian ketuntasan belajar sebesar 93,94% dan aktivitas siswa yang tergolong tinggi dan sangat tinggi dengan persentase sebesar  80,02%. Berdasarkan hasil penelitian disimpulkan bahwa pembelajaran dengan menggunakan model pembelajaran Creative Problem Solving pada materi sistem pernapasan di SMAN 1 Jatibarang Brebes dapat diterapkan karena terbukti efektif.
Peningkatan Hasil Belajar IPA dengan Model Problem Based Learning MTs Negeri 2 Purbalingga Desinta Dwi Nuriyanti; Ichya Musytafizur Ziqri
Jurnal Edutrained : Jurnal Pendidikan dan Pelatihan Vol 6 No 2 (2022): Jurnal Edutrained : Jurnal Pendidikan dan Pelatihan
Publisher : Balai Diklat Keagamaan Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37730/edutrained.v6i2.184

Abstract

This study aims to determine the effect of the combination of plasticine and video media with the Problem Based Learning (PBL) model on the learning outcomes of the Excretory System. The type of research applied is Classroom Action Research (CAR) with 15 students of class 8B MTs Negeri 2 Purbalingga as research subjects. Video is used as an illustration of the problem to be solved with the PBL model. Data collection was carried out using learning outcomes with multiple-choice items based on google form. The independent variable in this study is the Problem Based Learning Model, while the dependent variable is learning outcomes. By using descriptive quantitative analysis, this study obtained several findings. First the average score of learning outcomes in the first cycle was 42.67. Second, by using plasticine media to reconstruct the nephron model, the average learning outcome in the second cycle was 67.31, an increase compared to the first cycle. Third, there was an increase in the average student learning outcomes in the third cycle, which reached 91, 67. Classical completeness with KKM 70 in the first cycle is 20%, the second cycle is 46.67%, and the third cycle is 100%. Based on the results of the study, it can be concluded that the PBL model can improve learning outcomes.
Utilization of Fly Ash as a Coagulant in the Coagulation Process of Coal Yard Wastewater Fajri Wan Hidayat; Ramadhani, Arnesya; Ichya Musytafizur Ziqri; Siti Khuzaimah
Journal of Biobased Chemicals Vol. 6 No. 1 (2026): Journal of Biobased Chemicals
Publisher : University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jobc.v6i1.60006

Abstract

Coal yard wastewater is an industrial effluent characterized by high turbidity, high total suspended solids (TSS), and acidic pH, which may cause environmental pollution if discharged without proper treatment. One commonly applied treatment method is coagulation; however, the use of conventional chemical coagulants may increase operational costs and sludge generation. This study aims to evaluate the use of fly ash as an alternative coagulant for treating coal yard wastewater. Fly ash was activated using sulfuric acid (H2SO4) at concentrations of 1%, 3%, 5%, 7%, 10%, and 15%. The coagulation process was conducted using coagulant dosages of 2 mL and 4 mL per 500 mL of wastewater. The analyzed parameters included pH, turbidity, and total suspended solids (TSS). The results showed that activated fly ash significantly reduced turbidity and TSS by up to approximately 80%. The optimum performance was achieved at fly ash activation concentrations of 5% and 7%. These results indicate that fly ash has strong potential as an effective, economical, and environmentally friendly alternative coagulant for coal yard wastewater treatment.
Co-Authors Arnesya Ramadhani Desinta Dwi Nuriyanti Fajri Wan Hidayat Siti Khuzaimah