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All Journal CHEMPUBLISH JOURNAL Elementary of Teacher Education Journal
Febriani, Sri
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Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Education Languange, Linguistic, Communication & Media Other

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Pengaruh Model Pembelajaran Kooperatif Tipe Group Investigation Terhadap Hasil Belajar Siswa Pada Mata Pelajaran Matematika Kelas V UPT SPF SDN KIP Bara-Barayya 1 Sayidiman; Putri Atjo, Syamsuryani Eka; febriani, sri
ETEDU : Elementary of Teacher Education Vol 1 No 1 (2024): Desember 2024
Publisher : PT Ininnawa Paramacitra Edukasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62330/etedu.v1i1.121

Abstract

The problem in this study is the low mathematics learning outcomes of students. The objectives of this study are: (1) To overcome the description of the use of the Group Investigation Type Cooperative Learning Model on Mathematics learning outcomes, (2) To find out the description of mathematics learning outcomes, (3) To find out the effect of the use of the Group Investigation Type Cooperative Learning Model on students' Mathematics learning outcomes. This study uses the Quasi Experimental approach of the Nonequivalent Control Group Design Type. The research variable is the Cooperative Learning Type Group Investigation learning model. The population of the entire study was 45 students in class V-B as the experimental class and class V-A as the control class at UPT SPF SDN KIP Bara-Barayya 1. The data analysis technique used was inferential analysis, it was obtained that the data produced in this study were normally distributed and homogeneous. Hypothesis testing using Independent Sample T-test data showed that there was an effect on students' mathematics learning outcomes. It can be concluded that the research shows that (1) The description of the implementation of the learning process using the Group Investigation Type Cooperative Learning Model shows that each stage of the learning implementation can take place effectively and is categorized as very high, (2) The description of the mathematics learning outcomes of students after implementing the Group Investigation Type Cooperative Learning Model reaches a very good category, (3) The Cooperative Learning Type Cooperative Learning Model has a significant influence on the mathematics learning outcomes.
Desulfurisasi Minyak Hasil Pirolisis Plastik Polipropilena Dengan Campuran Bentonit/Karbon Aktif Teraktivasi H3PO4 Heriyanti, Heriyanti; Sutrisno, Sutrisno; Febriani, Sri; Ananda, Debby Mutiara
Chempublish Journal Vol. 1 No. 2 (2016): Chempublish Journal
Publisher : Department of Chemistry, Faculty of Science and Technology Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (372.959 KB)

Abstract

Sulfur merupakan salah satu komponen pengotor dalam bahan bakar cair. Keberadaan sulfur dalam bahan bakar cair merupakan salah satu penyumbang terjadinya pendemaran udara. Upaya peningkatan kualitas udara harus dimulai dari kualitas bahan bakar cair. Oleh karena itu, dibutuhkan metode untuk penghilangan sulfur dalam bahan bakar cair. Adsorpsi adalah metode yang umum digunakan pada proses pemurnian minyak. Bentonit dan karbon adalah adsorben yang biasanya menyerap zat warna dan pengotor pada minyak. Kemampuan bentonit dan karbon dapat ditingkatkan dengan aktivasi untuk memperbesar luas permukaan. Tujuan dari penelitian ini adalah mengadsorpsi minyak dari plastik PP untuk meningkatkan kualitasnya. Proses aktivasi karbon mengunakan akitivator H3PO4. Hasil adsorpsi menunjukkan terjadi pemucatan warna pada minyak dan kenaikan nilai kalor serta penurunan kadar surfur minyak. Kenaikan nilai kalor tertinggi terjadi pada minyak dari plastik PP bening yaitu sebesar 1,96% pada komposisi 60% bentonite dan 30% karbon aktif. Sedangkan nilai kandungan sulfur minyak mengalami penurunan, dengan penurunan terbesar terjadi pada minyak dari plastik PP warna yand diadsorpsi dengan komposisi bentonite dan karbon aktif 25% bentonite dan 75% karbon aktif, penurunan sebesar 0,14%. Kata kunci: bentonite, karbon aktif, H3PO4
Co-Authors Ananda, Debby Mutiara Heriyanti Heriyanti, Heriyanti Putri Atjo, Syamsuryani Eka Sayidiman Sutrisno, Sutrisno