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Jurnal Pendidikan Kimia (JPKim)
Published by Universitas Negeri Medan
ISSN : 20853653     EISSN : 25493116     DOI : 10.24114
Core Subject : Science, Education, Social,
Biochemistry, Genetics & Molecular Biology Chemistry Education Environmental Science
Jurnal Pendidikan Kimia (JPKim) yang dikelola Program Pascasarjana Universitas Negeri Medan terbit 3 kali setahun, yakni bulan April, Agustus dan Desember. JPKim menerbitkan artikel ilmiah hasil-hasil penelitian pendidikan kimia dan kimia fundamental. JPKim juga menerbitkan artikel Review terkait Pendidikan Kimia dan Kimia.
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Articles 6 Documents
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Search results for , issue "Vol 12, No 1 (2020): April" : 6 Documents clear
The effectiveness of using flipbook maker to improve the chemistry learning outcomes of senior high school students Nova Irawati Simatupang; Elferida Sormin
Jurnal Pendidikan Kimia (JPKim) Vol 12, No 1 (2020): April
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (387.461 KB) | DOI: 10.24114/jpkim.v12i1.17710

Abstract

This research was conducted by applying a flipbook maker to improve student chemistry learning outcomes on the subject of hydrocarbons. The aims of this study was to determine the effectiveness of the use of flipbook maker to improving student chemistry learning outcomes. The use of this flipbook can increase students interest in learning chemistry which also affects the increase in students chemistry learning outcomes. The population in this research were all students of XI senior high school (SHS) Darussalam Tangerang. The sample of the study was students of XI MIA 1 consisting of 32 students. The sample was selected by the purposive sampling techniqe. The instrument used was multiple choice questions consisting of 20 items. Based on the pre requisite test, the data obtained were normally distributed with sig = 0.094 > 0.05 and homogeneous with sig = 0.014 > 0.05. Hypothesis testing is done using one sample t-test with significance level of 0.05 using the SPSS. From the research results obatined tcount (15.346) > ttable (1.670) and significant value of 0.000 < 0.05. Based on this, it can be concluded that use flipbook makers is effective to improving student chemistry learning outcomes. Keywords: Chemistry; flipbook-maker; hydrocarbon; learning outcomes
The effect of guided inquiri based chemistry teaching module on students independent learning attitude: An experimental study on the characteristics of colligative solution teaching material Leony Sanga Lamsari Purba
Jurnal Pendidikan Kimia (JPKim) Vol 12, No 1 (2020): April
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (326.171 KB) | DOI: 10.24114/jpkim.v12i1.17714

Abstract

The purpose of this study was to work out the effect of the employment of chemistry learning modules based of colligative nature of the answer to boost of scholars independent learning attitudes. Population of this study was senior high school School PSKD 7 Depok by purposive sampling tecnique which was class XII with thirty students. Design of this study is one group pre non tes post non test group experiment. Data collection tecniques with questionnaries of 20 statement items and likert scale option. In processing data used the SPSS programs. The results of t paired test concluded that value of t count is bigger than the worth of t Table (-18.83> -23.80). Furthermore, it's also known that the importance value or post-nontest probability value (p-value) of 0,000 is smaller than 0.05 (0.000<0.05). It means there is effect of the use of chemistry learning modules based of colligative nature of the solution to improve of students independent learning attitudes. Based on the gain test to increase of students independent learning attitudes is in the high category, namely 0.82. Thus Guided Inquiri Based Chemistry Teaching Module are needed in learning nature of colligative solution. Keywords: Module; guided inquiri; learning
Computational calculation of acetalization of 2-chlorobenzaldehyde reaction mechanism using hydrochloric acid catalyst with ab initio method Muhammad Yusuf
Jurnal Pendidikan Kimia (JPKim) Vol 12, No 1 (2020): April
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (386.842 KB) | DOI: 10.24114/jpkim.v12i1.17707

Abstract

The aim of this research was to investigate the possible reaction mechanism steps in the formation of acetal from 2-chlorobenzaldehyde substrate. Asetal is a chemical compound that attracts the attention of the researchers because it has advantage in various fields of life. This study was conducted using Hyperchem software (OS Window’s) with the ab initio method using a 6-31G* basis set. In this study, the 3-21G basis set was also used as a comparison. The calculations were performed for each steps of the reaction mechanism including the substrate, the formation of hemiacetal intermediate, and the formation of acetal products. Based on the results of computational calculations, the acetalization of 2-chlorobenzaldehyde reaction can occur in the presence of an HCl catalyst. The HCl catalyst serves as an acid catalyst where hydrogen ions will be protonated by the substrate and hemiacetal. Hemiacetal compounds based on calculations have the highest formation energy compared to the benzaldehyde substrate and acetal products. This is because hemiacetal has a low stability and is easily transformed into other compounds. Keywords: Ab initio; 2-chlorobenzaldehyde; acetal
Analysis of constraints and alternative solutions to the implementation of chemical practicums in several high schools in Medan Gusti Rahman; Rizki Fitriani Nasution; Alfi Rizkina Lubis; Putri Novira; Lusyana Rahman; Ester Hartina Ria Sinaga; Puan Ibna Maghfirah Thaharah; Sri Nur Afrida; Retno Dwi Suyanti; Ayi Darmana; Saronom Silaban
Jurnal Pendidikan Kimia (JPKim) Vol 12, No 1 (2020): April
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (295.445 KB) | DOI: 10.24114/jpkim.v12i1.17744

Abstract

The laboratory is a place to train students' skills in conducting demonstration, experimental and scientific development practices. The provision of complete laboratory tools and materials and good laboratory management will make learning chemistry run optimally, but some high schools still do not meet the standards of facilities and infrastructure in the laboratory. Therefore, the researcher tries to collect the problems and constraints in the implementation of the practicum and find alternative solutions to the problem solving based on literature review and expert opinion. This research is a qualitative study which is a case study research in several high schools in Medan. The instruments in this study were student questionnaire, teacher questionnaire, principal questionnaire and observation sheet using Likert scale analyzed using the percentage formula. the results of the analysis of case studies conducted in a number of high schools in Medan, it can be concluded that, the area of chemistry laboratories in several schools in Medan meets BSNP standards, but there are still science laboratories used for chemical laboratories. The results of the analysis of equipment and materials that support the implementation of the practicum after the presentation of X1 schools 76.36%, X2 schools 65.67% and X3 schools 87.27%. Keywords: Chemistry laboratory; Practicum; Equipment
Improvement of students learning outcomes and motivation with chemical practicum e-module Nelius Harefa; Novia Fransisca Dewi Silalahi
Jurnal Pendidikan Kimia (JPKim) Vol 12, No 1 (2020): April
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (379.976 KB) | DOI: 10.24114/jpkim.v12i1.17708

Abstract

The use of modules has an effect on students’ motivation and students’ learning outcomes. Based on the analysis of learning outcomes data using paired sample t-test SPSS 21 shows that tcount (4.872)> ttable (2.354) at significance α = 0.05, which means that there are differences in students’ learning outcomes taught using chemistry practicum e-modules and practicum modules conventional. Students’ learning outcomes by utilizing the chemistry practicum e-modules are higher than students’ learning outcomes by utilizing conventional practicum modules. 93.24% of students have very strong motivation to study in the laboratory by utilizing the chemistry practicum e-module while by utilizing conventional practicum modules by 72.98%. Meanwhile, the Pearson Correlation test is 0.613 at significance α = 0.05, which means that there is a strong relationship between learning motivation and student learning outcomes. Keywords: Chemistry; e-module; learning outcomes; motivation; practicum
Teacher performance on students learning outcomes in applied chemistry Marnida Yusfiani
Jurnal Pendidikan Kimia (JPKim) Vol 12, No 1 (2020): April
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (270.415 KB) | DOI: 10.24114/jpkim.v12i1.17709

Abstract

Teacher performance affect the students’ learning outcomes. End of semester instructional process evaluated by teacher and students. This study aimed to analyze the effect of Pedagogic, Professional, Personality, and Social as Teacher Performance on Students’ Learning Outcome in Applied Chemistry course. The population of this study is student’s took Applied Chemistry course which academic year is: 2017/2018 and 2018/2019 in Polytechnic of Tanjungbalai. The sampling is total sampling. Research method using Partial Least Square – Structural Equation Modelling (PLS – SEM). Questionnaire evaluation in the end of semester as instrument for Teacher Performance and Student’s assessment sheet as instrument for Students’ Learning Outcome. The result showed that there is a direct effect of negative and not significant correlation between Pedagogic and Social Teacher Performance on Students’ Learning Outcome Disclosure and there is a direct effect of positive and not significant between Professional and Personality Teacher Performance on Students’ Learning Outcome Disclosure. Keywords: Teacher performance; Learning outcomes; Applied chemistry; PLS – SEM

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