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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 30 Documents
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Search results for , issue "Vol. 16 No. 2 (2024): August" : 30 Documents clear
Developing a weblog-based additive and addictive substance teaching module to improve critical thinking skills Ade Nur Anugrah; Muzzazinah Muzzazinah; Mohammad Masykuri
Jurnal Pendidikan Kimia Vol. 16 No. 2 (2024): August
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v16i2.58490

Abstract

This study aims to develop and obtain a webb-based teaching module on the material of additives and addictive substances. Also to determine the feasibility of the module, improvement think critical students, knowing which is better, learning using developed modules or existing books and to find out students' responses after being taught with the module substance additives and addictive based webb developed. The research method with R&D using the ADDIE model. The Webb-based teaching module was validated by 7 validators, then the valid module was presented to 20 students as a limited trial. The subjects of this study were 2 classes of class VIII students of Junior High School 8 Binjai, each class consisting of 28 students. The test instrument consisted of 15 critical thinking questions and non-test instruments in the form of BSNP questionnaires and student response questionnaires. The results of the study showed that the webb-based learning module on the material of Additive and Addictive Substances developed was categorized as Valid at a validity of 3.4 or an average percentage of 85%. While the results of the n-gain test were 82% in the experimental class with a high category and 73% in the control class with high category. t- test results shows that critical thinking skills student which using module teach based on webb which has developed more higher than the critical thinking skills of students who are taught using books package which exists at school. Results of student response questionnaire analysis show that student give response positive as big as 86%. Thus, the webb-based teaching module developed is ready to be used in learning the material on additives and addictive substances in food in order to improve students' critical thinking skills.
Detecting the interest of undergraduate students : A new way of chemistry education as a basis for instructional development Parham Saadi; Almubarak Almubarak; Restu Prayogi; Fadhlan Muchlas Abrori
Jurnal Pendidikan Kimia Vol. 16 No. 2 (2024): August
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v16i2.61402

Abstract

The achievement of learning targets is largely determined by how learning facilitates the needs of participants. Interest is one of the important points that teachers need to be aware of, especially in higher education environments to produce competent and resilient students (prospective teachers). The purpose of the research was to detect the interests of chemistry education students quantitatively and other themes that related to their lives. The quantitative approach was the method used in the study because it was in line with the data collection technique, namely the questionnaire technique with quantitative analysis. The results showed that the theme interest œeveryday life with the topic of food has the largest percentage, namely 86%, while the least theme was textile dyeing (58.30%) by chemical processes theme. Other additional themes revealed that social media (digital technologies) has 75.50% while teaching & learning and diversity have percentages of 64.70% and 59%, respectively. The conclusion was that detecting elements of interest in students could be supporting data for designing chemistry learning considering the changes in the mindset of the young generation due to digital culture. This research can also be used as a needs analysis in learning because a great interest in learning affects students™ academic performance. Research findings also give be a provision for students when they become teachers so that this research can be used in the school environment.
Bibliometric analysis : Green chemistry trends and issues in chemistry education from 2019 to 2024 Wanda Setya Hanifa; Sri Handayani; Suyanta Suyanta
Jurnal Pendidikan Kimia Vol. 16 No. 2 (2024): August
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v16i2.58875

Abstract

This study analyzes green chemistry research trends in chemistry education. This study used a quantitative bibliometric approach. The number of publications analyzed is 104 publication documents from 2019 “ 2024. This research collects, processes, and filters information in Scopus journals and articles. Metadata results show that the distribution of publication frequency peaked in 2019, with 26 documents identified. The green chemistry research area is dominated by chemistry research (31.3%). The country with the most documents and the most productive in publishing green chemistry is the United States, with 30 papers identified. At the same time, Indonesia is ranked fifth as the most productive country in publishing green chemistry, with 10 documents identified. Canada ranked second with 17 papers, and Germany ranked third with 15 documents. The institutions that contributed the most came from Germany: the University of Bremen, with 11 papers 10.58%, and the University of Toronto with 8 documents (7.69%). The authors with the most citations are Chen Tse-Lun et al., with 245 citations. Meanwhile, when viewed from the number of documents published by the author, Eilks I. has 11 papers with a contribution of 4.91%. There are 5 clusters with the most popping keywords: green chemistry, human, and chemical reaction. Research and publications on this topic have been sparse in the past five years. Surveys and analyses of green chemistry literature are essential because tracking research trends in green chemistry in chemistry education is vital to directing the future.
Development of chemino card learning media (chemical domino cards) on elemental stability material Suhardi Suhardi; Sumiati Side; Eda Lolo Allo
Jurnal Pendidikan Kimia Vol. 16 No. 2 (2024): August
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v16i2.56574

Abstract

This reserach is research and development which aims to determine the level of validity, practicality and effectiviness of Chemino Card learning media as a learning media on elemental stability material which was carried out at X IPA. This development refers to the ADDIE development model which consists of five stages, namely: (1) analysis stage, (2) design state, (3) development stage, (4) implementation stage and (5) evaluation stage. The validity instrument is in the form of a validation sheet for media experts and material experts. Practical instrument include learning implementation observation sheets, teacher response questionnaires, student response questionnaires. The effectiviness instrument is a learning outcomes test. Research results show that: (1) the validity of the Chemino Card media based on material experts and media experts, respectively 3.33 and 3.46 which are included in the very valid category, (2) the practicatily of the Chemino Card media based on the observation of learning implementation, response questinnaire teachers and student respectively 96.67%, 90.03% and 83.42% which are included in the very high category, (3) effectiveness of Chemino Card media based on student learning outcomes that achieve class mastery of 92% that it is included in the effective category. Based in these data, it was concluded that Chemino Card learning media on elemental stanility material developed using the ADDIE model were stated to be valid, practical and effective for us in learning.
Development of e-module based on Premna serratifolia research to identify functional group of secondary metabolites Arni Arni; Dini Hadiarti; Tuti Kurniati
Jurnal Pendidikan Kimia Vol. 16 No. 2 (2024): August
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v16i2.59061

Abstract

The absence of self-learning resources tailored to the characteristics of students to study the identification of secondary metabolite functional groups based on research on medicinal plants in West Kalimantan necessitates the development of an e-module. This research aimed to develop an e-module based on Premna serratifolia research to identify functional groups in the Natural Products Chemistry course, ensuring its validity and practicality. The ADDIE model was followed, which included analysis, design, development, implementation, and evaluation stages, to develop this e-module. Data were collected using an indirect communication technique by distributing questionnaires. The research sample comprised 30 participants from Universitas Muhammadiyah Pontianak, Universitas Tanjungpura University, and Akademi Farmasi Yarsi Pontianak. The e-module was validated by nine validators, including subject matter experts, media experts, and language experts, with a validity score of 89.3%, indicating it is highly valid. The module was also found to be highly practical through individual, small-group, and large-group testing, with scores of 95.6%, 94.3%, and 98.3%, respectively. This research-based e-module is considered highly suitable and practical as a learning resource for identifying functional groups.
Mechanical properties of water hyacinth (Eichhornia crassipes) and sansevieria (Sansevieria trifasciata) fiber reinforced composite with polyester matric Nurfajriani, Nurfajriani; Pulungan, Ahmad Nasir; Sudrajat, Ajat; Manurung, MS; Rahayu, Rahayu
Jurnal Pendidikan Kimia Vol. 16 No. 2 (2024): August
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v16i2.56532

Abstract

Sansevieria (Sansevieria trifasciata) fibers and water hyacinth (Eichhornia Crassipes) fibers as natural fiber producers with good quality have good potential to be developed. This study aims to examine the production and characteristics of composites made from sansevieria fiber and water hyacinth fiber with a polyester matrix through the employment of the hand lay up method. This composite uses variations in the composition of the fiber mixture by soaking 5% NaOH for 2 hours at room temperature, for the resulting composite material. The resulting composite material is then subjected to a bending test to determine its mechanical properties, utilizing the ASTM D638 test standard. Based on the conducted research, the most favorable outcomes in terms of bending test results and modulus of elasticity are observed with a 10% incorporation of sansevieria fiber, yielding an average of 5.520 MPa for bending test and an elastic modulus of 7.444 MPa. Alternatively, when combining both fibers, the optimal mixture consists of 20% sansevieria fiber and 20% eceng gondok fiber, resulting in an average bending test value of 7.503 MPa and a modulus of elasticity of 7.873 MPa.
Development of chemino card learning media (chemical domino cards) on elemental stability material Suhardi, Suhardi; Side, Sumiati; Allo, Eda Lolo
Jurnal Pendidikan Kimia Vol. 16 No. 2 (2024): August
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v16i2.56574

Abstract

This reserach is research and development which aims to determine the level of validity, practicality and effectiviness of Chemino Card learning media as a learning media on elemental stability material which was carried out at X IPA. This development refers to the ADDIE development model which consists of five stages, namely: (1) analysis stage, (2) design state, (3) development stage, (4) implementation stage and (5) evaluation stage. The validity instrument is in the form of a validation sheet for media experts and material experts. Practical instrument include learning implementation observation sheets, teacher response questionnaires, student response questionnaires. The effectiviness instrument is a learning outcomes test. Research results show that: (1) the validity of the Chemino Card media based on material experts and media experts, respectively 3.33 and 3.46 which are included in the very valid category, (2) the practicatily of the Chemino Card media based on the observation of learning implementation, response questinnaire teachers and student respectively 96.67%, 90.03% and 83.42% which are included in the very high category, (3) effectiveness of Chemino Card media based on student learning outcomes that achieve class mastery of 92% that it is included in the effective category. Based in these data, it was concluded that Chemino Card learning media on elemental stanility material developed using the ADDIE model were stated to be valid, practical and effective for us in learning.
Improving students' scientific literacy : Development of guided inquiry-based student worksheets on buffer solution material Sholahuddin, Arif; Normina, Normina; Iriani, Rilia
Jurnal Pendidikan Kimia Vol. 16 No. 2 (2024): August
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v16i2.56718

Abstract

Everyone must have scientific literacy to actively participate in advancing science, technology, and society. However, the scientific literacy skills of Indonesian students are still low. This research aims to develop student worksheets based on guided inquiry on buffer solution material to increase students' scientific literacy. This research applied 4D development research which includes the Definition, Design, Development, and Dissemination stages. At the definition stage, a needs analysis was carried out, while at the design stage, a draft of the student worksheet was made. At the development stage, the worksheet was validated by 5 validators. Furthermore, the revised worksheet was tested for readability by 10 students in class XI IPA. Finally, the revised worksheet was field tested on 32 students through a learning buffer solution in class with a guided inquiry strategy. This study employed a descriptive approach to assess the validity, practicality, and effectiveness of the worksheet. The findings indicate that the developed worksheet is highly valid, with an average validity score of 94.11% across the content, presentation, media, and language aspects, placing it in the very valid category. The worksheet also achieved a practicality score of 84%, indicating it is practical. Additionally, the worksheet improved students' scientific literacy with an N-gain value of 0.59. Therefore, it can be concluded that the worksheet can be used to improve students' scientific literacy through buffer solution learning.
The effect of comonomer styrene on the grafting of maleic anhydride onto cyclized natural rubber Siregar, Muhammad Said; Ardilla, Desi; Eddiyanto, Eddiyanto; Nasution, Asmarasari
Jurnal Pendidikan Kimia Vol. 16 No. 2 (2024): August
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v16i2.56906

Abstract

The grafting degree of maleic anhydride onto cyclized natural rubber is generally still low. This is due to the lack of electron density of the maleic anhydride double bond so that its reactivity is low. This research aims to increase the grafting degree by the addition of a styrene comonomer. Grafting of maleic anhydride onto cyclized natural rubber had been performed in an internal mixer 150 oC and 80 rpm in the presence of styrene comonomer. The grafted product was analyzed by Fourier Transform Infra-Red to determine the presence of maleic groups and Differential Scanning Calorimetry and Thermalgravimetric to investigate its thermal properties. Fourier Transform Infra-Red spectra confirmed that the grafted product of maleic anhydride onto Cyclized Natural Rubber formed with absorption at 1700 cm-1, 1850 cm-1 and 700 cm-1. The higher concentration of maleic anhydride reacted the higher of grafting degree of maleic anhydride with the high intensity of absorption at 1700 cm-1 and 1850 cm-1. Differential Scanning Calorimetry spectra showed that the glass transition temperature of maleated Cyclized Natural Rubber products increases, the more comonomer are added the higher the glass transition temperature of the product. Generally, based on the Thermalgravimetric spectra, the thermal properties of grafted product does not change significantly compared to the blank sample.
The effect of pH and type of silicone on cotton and polyester finished fabrics Atikah, Wulan Safrihatini; Salis, Witri Aini; Permana, Lingga; Redya, Brilyan Muhammad
Jurnal Pendidikan Kimia Vol. 16 No. 2 (2024): August
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v16i2.57150

Abstract

A Characteristic often found in textile products is softness. The compound widely used as softener is silicone compound. The aim of this research is to determine the properties that will be obtained from the type of fabric being processed by comparing the use of silicon types, namely amino-propyl-functional polydimethyl siloxane (PDMS) and blocked amino silicone to each fabric. Firstly, research was conducted by varying the pH of the finishing process. Determined optimum pH will be followed by determining concentration of 15“60 g/L for each type silicone. The experiments was carried out on pad- dry- cure method. The tests carried out include fabric stiffness, tensile strength, resistance to repeated washing and heat, yellowing effect, Fabric Touch Tester and Water Contact Angle testing. It was found that there was no significant influence of pH on the use of amino-propyl-functional polydimethyl siloxane and blocked amino silicone compounds, so the next process was carried out at pH 7. Increasing the concentration of the softener will provide a better softening effect and optimum concentration at 45 g/L for both types of fabric used. Blocked amino silicone has better resistance to repeated washing compared to amino-propyl-functional polydimethyl siloxane. Heat testing shows that differences in molecular structure have no influence on both fabrics. Fabric processed using amino-propyl-functional polydimethyl siloxane provides a yellowing effect. Amino-propyl-functional polydimethyl siloxane provides good hydrophilicity. The softness value of blocked amino silicone is better performance on cotton fabric.

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