Garuda - Garba Rujukan Digital

Wesly Hutabarat

Universitas Negeri Medan, Medan 20221, Indonesia

Author-ID : 3951699

Biochemistry, Genetics & Molecular Biology Chemistry Education Environmental Science

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Articles

Development of chemical element practical workbook based on projects and characters for class xii senior high school Bajoka Nainggolan; Martin Simamora; Wesly Hutabarat
Jurnal Pendidikan Kimia (JPKim) Vol 11, No 3 (2019): December
Publisher : Pascasarjana Universitas Negeri Medan

This investigation based on analysis, design, development, implementation, and evaluation (ADDIE) method intended to develop an innovative chemistry laboratory workbook of Chemistry Element integrated with project-based learning and characters. Two chemistry lecturers and teachers respectively selected to validate three local chemistry laboratory workbook and chemistry laboratory workbook developed. Questionnaires distributed to the lecturer and teacher samples and found that content, language, presentation, and feasibility of graphics scores were 3.31, 3.37, 3.22, 3.15 and 3.15 respectively and the average score was 3.26 which means that the chem. Lab workbook developed is very valid. In addition, student samples consisted of 2 classes of grade XII of science students which classified into experimental group and Controled group. The developed chemistry laboratory workbook and the conventional workbook were tried out to group Experiment and group Controlled respectively. The average scores of student outcomes in group Experiment was higher than group Controled or 87.5%>73.8%. Then the average psychomotor scores of group Experiment was larger than group controled or 84.64>78.42. In addition, the affective scores of group Experiment was larger than group Controled or 82.78>76.38. The hypothesis tested with one way ANOVA at the significant level of α = 0.05, and found that tCalc > tTable or 4.536 > 1.697 It is concluded that the Innovative chemistry laboratory workbook is highly very good.Keywords: Chemistry laboratory workbook; chemistry element; project-based learning

The development of learning modul of colloid system integrated with project based learning (PjBL) system to increase the result of students’ learning Sri Wartika; Zainuddin Muchtar; Wesly Hutabarat
Jurnal Pendidikan Kimia (JPKim) Vol 13, No 1 (2021): April
Publisher : Pascasarjana Universitas Negeri Medan

This research aims to develop learning material in the form of colloid learning system module integrated with PjBL model in accordance with curriculum 2013 and to find out the increasing of students learning result after using learning module of colloid system integrated with Project Based Learning (PjBL) system. The type of the study is development research and experiment. It examines how the module of Integrated with Project Based Learning (PjBL) integrated with PjBL model is organized based on curriculum 2013 and the experiment is managed by analyzing the using of the module in senior high school. The study was carried out to the students of 9th grade of SMA Negeri 1 Sunggal and SMA Swasta Muhammadiyah 18 Sunggal school year of 2018/2019 in second semester. The data are examined by using independent sample of T-test by using SPSS 23 program. The result shows that colloid system module integrated with PjBL developed model is valid and appropriate to be used based on BSNP.The score of the students who are taught by with the module has increased in average about 82.80 (high) with a pretest score of 31.80 (low), the score of the students who are taught by using textbooks increase to 77.60 (middle) with a pretest score of 32.40 (low).Keywords: Module, Colloid, Project based learning

Development of chemical practice guides class xi project based to improve student’s chemical learning outcomes on acid base materials Bajoka Nainggolan; Ita Sri Apika Pinem; Wesly Hutabarat
Jurnal Pendidikan Kimia (JPKim) Vol 10, No 2 (2018): August
Publisher : Pascasarjana Universitas Negeri Medan

Abstract: This study aims to obtain a standard project-based laboratory chemistry guide for class XI students of Second semester on acid base material. The sample consists of 3 tutorial guide publisher A, B, and C, 2 teacher of senior high school (SMA) 4 Medan, 2 Unimed chemistry lecturer and 2 class XI SMA 4 Medan. Research is descriptive and experimental development with ADDIE models. The results show that the guides have been developed and the standards are in accordance National Education Standards Agency (BSNP). Result validation practice guides developed get the average score of 3.48 times higher than the standard practicum guide A = 3.18, B = 3.32; and C= 30.75. Experimental practice test improves the average learning outcomes of experimental class 1 (using development guide) 70.8% and experiment 2 (using textbook) 54.1%. Psychomotoric and affective grade experiment class 1 higher than the experimental class 2. The resultant learning improvement data was analyzed by right t test. Test of t-test for learning result obtained t count and t table, 6.68 and 1.678, respectively, at level 0.05. This indicates that the project-based practice guide has been well developed and feasible for chemical learning in senior high school.Keywords:acid base material; development; laboratory guide; project based learning

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