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Cassava Peel Extract as Raw Materials for Making Paper : Utilization of Waste as Environmental Conservation Kurnia, Yogi; Jauhariyah, Durrul; Madiyo, Madiyo; Nugraha, Yoga; Akhmansyah, Muhammad; Widiani, Nurhaida
International Journal of Hydrological and Environmental for Sustainability Vol 1, No 3 (2022): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/ijhes.v1i3.170

Abstract

Today, the continuous use of paper makes various countries experience a tree crisis due to continuous logging. Therefore, the obstacle faced in making paper is the lack of availability of wood raw materials used in the manufacturing process. Currently, various countries are starting to think about other alternatives in paper making. In this study, the use of cassava peels in papermaking can be a solution in meeting the needs of raw materials for papermaking because the content contained in cassava peels can be used as material for making pulp. The experiment of making cassava pulp was carried out using the organosolv process, which is cooking to separate the fibers using organic chemicals. The chemical used in the cooking process is ethanol. The research method used was Completely Randomized Design (CRD). The experiment was carried out with 3 treatments and 3 repetitions. with each concentration of ethanol in the cooking treatment that is 50%, 70% and 90%. Data analysis was carried out by measuring the thickness, gram, age, and tensile strength of the paper. From the experiments conducted, it is proven that using cassava peel can be used as an additional material in making paper. The most effective concentration of ethanol is at a concentration of 90%.
Pengaruh Penggunaan Metode Drill pada Materi Kalor terhadap Hasil Belajar Fisika Siswa Jauhariyah, Durrul; Dardiri, Dardiri
Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 6 No 1 (2017): Jurnal Ilmiah Pendidikan Fisika Al-Biruni
Publisher : Universitas Islam Negeri Raden Intan Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/jipfalbiruni.v6i1.907

Abstract

Penelitian ini bertujuan untuk mengetahui: (1) perbedaan hasil belajar kognitif siswa yang diajar menggunakan metode drill dengan siswa yang menggunakan metode ceramah; (2) pengaruh penggunaan metode drill terhadap hasil belajar kognitif siswa kelas X MAN 1 Bandar Lampung. Jenis penelitian ini adalah kuasi eksperimen dengan pretest posttest control group design. Populasi pada penelitian ini seluruh siswa kelas X MAN 1 Bandar Lampung. Pengambilan sampel dilakukan dengan teknik cluster random sampling, sehingga terpilih kelas X.MIA4 sebagai kelas eksperimen dan kelas X.MIA1 sebagai kelas kontrol. Instrumen yang digunakan adalah soal pre-test dan soal post-test. Teknik analisa data menggunakan uji-t dan regresi. Hasil penelitian menunjukkan bahwa: (1) terdapat perbedaan hasil belajar kognitif siswa yang diajar menggunakan metode drill dengan siswa yang menggunakan metode ceramah yang ditunjukkan oleh nilai signifikansi pada uji t sebesar 0,033; (2) terdapat pengaruh penggunaan metode drill terhadap hasil belajar kognitif siswa kelas X MAN 1 Bandar Lampung yang ditunjukkan oleh koefisien regresi positif sebesar 0,758.The Effect of Drill Method on Heat Material Toward Students’ Physics Learning OutcomesThe purpose of this research was (1) the difference of the students’ cognitive study results that used drill method and lecture method; (2) the effect of using drill methods concerning the study result of learning in class X MAN 1 Bandar Lampung. This was quasi-experiment research with Pretest-Posttest Control Group Design. The population was all of X grade students of MAN 1 Bandar Lampung. Taking samples in this research was done by a cluster random sampling technique, so X MIA4 was chosen as the experimental class and X MIA1 was chosen as the controlling class. The Instrument used in this research consist of pretest and posttest question. Then, the technique of analyzing data used T-test and regression. The results of this research show that (1) there was a difference of the student’ cognitive study results that used drill and lecture method with significance of t-test 0,033; (2) there was an effect of using drill method concerning about the students’ cognitive study result with coefficient of regression 0,758.
Cooperative learning implementation to improve an achievements of students on science competition Jauhariyah, Durrul; Dardiri, Dardiri; Prasetiyo, Andika Eko; Lestari, Fitria; Sutduean, Jutamat; Sriyakul, Thanaporn
Journal of Advanced Sciences and Mathematics Education Vol 1, No 2 (2021): Journal of Advanced Sciences and Mathematics Education
Publisher : CV. FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1427.379 KB) | DOI: 10.58524/jasme.v1i2.39

Abstract

The number of student achievements in competition is one indicator to see the quality of learning in a school. This study aims to see the extent to which the application of cooperative learning in improving students' ability to face physics olympiad and other competitions. The sample consisted of 12 students who were prepared to compete and were taken from 3 different grade levels namely 10th grade, 11th grade, and 12th grade in one of the State Madrasah Aliyah (MAN) in Bandar Lampung City. The 12 students were divided into 2: 6 students in the experimental class and 6 in the control class. The study used a type of Quasi Experiment with the design of One Group Pretest-Posttest Design. Learning is done by applying three types of cooperative learning, namely Student Team Achievement Division (STAD), Jigsaw II type, and Teams Games Tournament (TGT) type with a total of 24 meetings. The results of the learning process are obtained from the results of the pre-test given to all students. In the pre-test, it was divided into 2 types, namely: Pre-test grub and Individual Pre-Test. Pre-Test grub is a test that answers questions quickly, precisely, and carefully. In the Pre-test grub, it is done by dividing 12 students into 4 grub (3 students/grub). Pre-Test grub is a simulation of LCT (Lomba Cepat Tepat). Pre-Test grub is an application of cooperative learning method type (TGT) which aims to train speed in answering questions correctly. Individual Pre-Test is Pre-Test which is done by giving students a question sheet to answer. Both types of Pre -Test are given 120 minutes each. After doing the Pre-Test, students test results were evaluated to find out the deficiencies in understanding. Furthermore, the re-learning process is given again in the form of repetition and reinforcement of material that is poorly understood before the Post-Test (grub and individual) is carried out. The results showed that there were differences in understanding the theory and test scores based on differences based on class level, the number of participants in learning activities, and the number of students practicing answering questions. The results of this study were then correlated with their achievements from the results of physics competitions at various events. The results showed that cooperative learning methods with 3 types, namely: type (STAD), type Jigsaw II, and type (TGT) can improve achievement in physics competitions. The conclusions of these results, obtained from the results of the scores on the grub or LCT competitions conducted at different times and places, and also from the results of the comparison of physics olympiad scores (individual competition). The results of this study show that the cooperative learning model has a positive impact on student achievement.