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All Journal Alotrop Jurnal Pendidikan dan Ilmu Kimia
Salastri Rohiat
FKIP Universitas Bengkulu
Chemistry Education

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PENERAPAN MODEL PEMBELAJARAN TIME TOKEN UNTUK MENINGKATKAN KEMAMPUAN BERTANYA DAN HASIL BELAJAR KIMIA SISWA KELAS X MIPA 1 SMAN 09 KOTA BENGKULU TAHUN AJARAN 2017/2018 Ufi Damayanti; Amrul Bahar; Salastri Rohiat
ALOTROP Vol 4, No 1 (2020)
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/atp.v4i1.13693

Abstract

Research the act of this class carried out of date 01 February 2018 – 08 March 2018aims to (1) enhance the capacity of ask a student to lose their; (2) increase yields of of students to study, declaration of relinquishing his her to see liveliness of teachers and students in the process of learning to promote disorder to. A subject in this research is a student X MIPA 1 SMAN 09 city Bengkulu school year 2017/2018 on the subject of redox reactions, which amounted to 28 students. The research results show that the implementation of learning cooperative type time token can improve the ability ask students, improve learning outcomes students, and improving liveliness teachers and students in learning in subject matter reaction redoks the result of which have be completed in cycle 3rd. On the ability of cycle I ask students 75 % rate of C1, 15 % rate of C2, 10 % rate of C3 and 28,57 % student learning. Cycle II ask students 65,22 % rate of C1, 21,74 % rate of C2, 13.04 % rate of C3 with 64,29 % student learning. The cycle III ask student 4,35 % rate of C1, 78,26 % rate of C2, and 17,39 % rate of C3, with 89,29 % student learning (who has achieved indicators of the quality of the success of research and KKM). To liveliness teachers from the cycle I, II, and III each 25, 27, and 30, while liveliness students in each 21, 24, and 28
PERBANDINGAN HASIL BELAJAR KIMIA SISWA ANTARA MODEL PEMBELAJARAN KOOPERATIF TIPE STAD DAN CORE DI SMAN 2 KOTA BENGKULU TAHUN PELAJARAN 2018/2019 Citra Utari; Salastri Rohiat; Nurhamidah Nurhamidah
ALOTROP Vol 4, No 2 (2020)
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/atp.v4i2.13862

Abstract

This study aims to see whether or not there are differences in student chemistry learning outcomes between classes that apply STAD and CORE type cooperative learning models to buffer solution material in class XI MIPA Bengkulu City 2 High School 2018/2019. The study was conducted in March-April 2019. This type of research is Quasi research experiments. The population of this study was students of class XI MIPA with a population of 243 students. Sampling was carried out after the homogeneity and normality test, so the class XI MIPA A and XI MIPA B was selected as the research sample with random sampling technique with a sample of 60 students. The first experimental class uses the STAD learning model and the experimental class II uses the CORE learning model. Student learning outcomes data obtained from the value of the pretest and posttest. The two treatments given can improve learning outcomes with the average value of the pretest of experimental class I and experiment II namely 27.83 and 33.83 then the average value of the posttest of experimental class I and experiment II is 80 and 80.2 which means the posttest value has reached KKM which is 75. Hypothesis testing is done using a significant level (? = 0.05), the value obtained for t count> t table is 2,286> 1,672. These results can be concluded that there are significant differences in learning outcomes between the experimental class I and experiment II on the buffer solution material
PENGEMBANGAN MODUL LARUTAN PENYANGGA BERBASIS PENDEKATAN TERPADU STEM Amelia Tripripa; Hermansyah Amir; Salastri Rohiat
ALOTROP Vol 4, No 1 (2020)
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/atp.v4i1.13704

Abstract

This study aims to determine the feasibility, student response and effectiveness of buffer solution modules based on the integrated STEM approach developed. This research is a development research adapted from the development model of Borg and Gall. The study was conducted in January - April 2019 at SMAN 09 Kota Bengkulu. The research data were obtained from the results of interviews, validation questionnaires, student response questionnaires and understanding tests. The selection of the trial class was carried out through a normality test for all class XI MIPA with a total subject of 111 students. The results of the trial were obtained by two respondent classes namely XI MIPA 1 for trial use and XI MIPA 2 for product testing with a total of 38 students. The results of the validation test obtained an average assessment of material experts 4.3 and 4.7 media experts who were both in the range of 4,2 ? < 5 with a very valid classification. In product testing and usage tests, the average score of students' responses was 4.3 with a very interesting classification. The effectiveness of the module is seen from the understanding test with the percentage of student learning completeness of 86.21% reaching the KKM which is categorized as effective. So it can be concluded that, in general, the module based on the solution based on the STEM approach developed can be used in the learning process in class XI MIPA SMAN 09 Kota Bengkulu in the academic year 2018/2019.
Co-Authors Amelia Tripripa Amrul Bahar Citra Utari Hermansyah Amir Nurhamidah Ufi Damayanti