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All Journal Elkawnie Lantanida Journal Jurnal Riset Pendidikan Kimia (JRPK) Amina Journal of Educational Chemistry (JEC) Jurnal Ilmiah Wahana Pendidikan
Sabarni Sabarni
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The Effectiveness of Scientific Literacy-Based Student Worksheets in Improving Student Learning Outcomes in Colloid Chemistry Learning Rahmi, Chusnur; Maisarah, Maisarah; Sabarni, Sabarni
Journal of Educational Chemistry (JEC) Vol. 6 No. 1 (2024)
Publisher : Department of Chemistry Education, Faculty of Science and Technology, Universitas Islam Negeri Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/jec.2024.6.1.20028

Abstract

Low student learning outcomes are a significant issue in high school colloid chemistry learning. Correspondingly, this research aimed to determine the effectiveness of scientific literacy-based student worksheets (LKPD) in colloid chemistry learning. A quasi-experimental approach, specifically the pretest-posttest control group design, was employed in this study. The experimental class, XI IPA-2, consisted of 15 students, while the control class, XI IPA-1, also included 15 students, with total sampling techniques used to select the sample. Test instruments were developed to collect student learning outcome data through pretest and posttest techniques. The effectiveness of student worksheets was analyzed using the N-gain test, independent sample t-test, and effect size tests. The N-gain results exhibited an average score of 0.7319, which was a high category for the experimental class, while the control class obtained a score of 0.5308, which was categorized as moderate. The independent sample t-test results indicated a 2-taliled significance score of 0.002 (< 0.05), demonstrating a significant difference between the learning outcomes of the experimental and control classes. Based on these findings, it can be concluded that scientific literacy-based student worksheets effectively improved student learning outcomes in colloid chemistry learning at the senior high school level.
Teknik Pembuatan Gambir (Uncaria gambir Roxb) Secara Tradisional Sabarni Sabarni
Elkawnie Vol. 1 No. 1 (2015)
Publisher : Faculty of Science and Technology Universitas Islam Negeri Ar-Raniry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/ekw.v1i1.523

Abstract

Gambir adalah sejenis getah yang dikeringkan yang berasal dari ekstrak remasan daun dan ranting tumbuhan bernama sama (Uncaria gambir Roxb.) yang memiliki beragam manfaat untuk kesehatan. Buah gambir mengandung antioksidan yang sangat tinggi, katekin, flavonoid, alkaloid, dan zat penyamak. Buah gambir sering digunakan para ibu- ibu dan nenek- nenek untuk campuran menyirih yang berguna untuk menguatkan gigi sehingga tidak mudah keropos ataupun patah. Buah gambir memiliki banyak manfaat khususnya untuk kesehatan tubuh, antara lain : mengobati sakit kepala terutama sakit kepala sebelah atau migrain, mengobati diare akut, mengatasi penyakit disentri, meredakan penyakit radang tenggorokan, menyembuhkan penyakit panas dalam yang mengganggu kesehatan mulu dan gusi, mengobati luka bakar, serta mengatasi sariawan dan bibir pecah- pecah. Penelitian ini bertujuan untuk menginformasikan teknik pengolahan gambir secara tradisional, dimana diharapkan hasil penelitian ini dapat bermanfaat bagi pengembangan budidaya tanaman gambir serta usaha produksi gambir. Hasil penelitian menunjukkan bahwa pembuatan gambir dapat dilakukan dengan cara sederhana dan menggunakan peralatan tradisional serta Gambir yang dihasilkan dari pengolahan secara tradisional tersebut berkualitas baik (mutu I).
Co-Authors Anjar Purba Asmara Anjas Rioga Novalta Ardiansyah, M. Edo Azhar Amsal Cut Utari Lydia Fitri Elita Elita Haris Munandar Maisarah Maisarah, Maisarah Mellyzar, Mellyzar Mujakir Mujakir Noviza Rizkia Nurhayati Nurhayati Nurhayati Nurhayati Rahmah Diana Fitri Rahmi, Chusnur Safrijal Safrijal, Safrijal Teuku Badlisyah Zainuddin, Zainuddin