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EduChemia: Jurnal Kimia dan Pendidikan

EduChemia
Website

Published by Universitas Sultan Ageng Tirtayasa

ISSN : 25024778 EISSN : 25024787 DOI : http://dx.doi.org/10.30870/educhemia.v6i2.10412

Core Subject : Science, Education, Engineering,

Chemical Engineering, Chemistry & Bioengineering Chemistry Education Materials Science & Nanotechnology

Focus and Scope Educhemia (Jurnal Kimia dan Pendidikan) is Periodicals published the results of research related to the development of science and technology in the field of Chemistry and Chemistry education as a form of intellectual property Chemistry: Organic chemistry, Inorganic chemistry, Biochemistry, Physical chemistry, Analytical Chemistry, Environmental Chemistry, Material chemistry, Ethnochemistry. Chemistry education: chemistry learning design and model, chemical education curricula, Technology innovation and media/multimedia in chemistry learning, development of evaluation tools, lesson study and classroom action research

Arjuna Subject : Kimia(semua kategori) - Kimia Organik

Articles 207 Documents

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Optimization of Time in the Esterification Process of Jelantah Oil With Anova Analysis Eka Megawati; Adittya Octavian Perdana Putra; Norhan Effendi; Yuniarti Yuniarti
EduChemia (Jurnal Kimia dan Pendidikan) Vol 6, No 2 (2021)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Used cooking oil is oil from frying which is an unused material. The processing of used cooking oil into biodiesel is expected to reduce household waste and become a new and renewable energy source. The first step in making biodiesel is the esterification process by measuring the value of free fatty acids. The purpose of this study was to determine the optimum time used during the esterification process and to compare the volume of using sulfuric acid (H2SO4) catalyst using the Anova method. The research was conducted using an experimental method. The variables used in this study were the deposition time of 12 hours to 25 hours and the volume of catalyst compared was 2 ml and 4 ml for every 200 ml of used cooking oil. Based on the results of the analysis, it was found that the optimum conditions that can be used in the deposition process are at 18 hours using 4 ml of catalyst. Based on the results of ANOVA analysis, it can be concluded that the calculated F value (0.002) <F table (94.196), it means that the FFA value of the 2 and 4 ml catalyst variations does not have a significant difference. faster process.

Development of SETS (Science, Environment, Technology, And Society) Oriented Chemical Learning Module on Natural Oil Concept Ratna Sari Siti Aisyah; Indah Langitasari; Irma Sadiah
EduChemia (Jurnal Kimia dan Pendidikan) Vol 6, No 2 (2021)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

The Indonesian government is trying to prepare the next generation of nations to deal with the globalization era; one of these is education. It was transformed in the application of Kurikulum 2013, in which the object of the learning process is more emphasis on phenomena or real events. But, the learning methods are still unvaried, and learning materials based on real-life problems are still not available, which creates a performance gap in the learning process. This research aims to cope with the performance gap by developing the saints, environment, technology, and society (SETS)-oriented module on petroleum topic and determine the students' response. The module developed in this research is done following a phase of the ADDIE developmental model. This developmental model consists of analyze, design, development, implementation, and evaluation. This SETS-oriented module has been trialed to 30 second-grade students of SMA Negeri 8 Kota Serang. According to validation and students' response, the SETS-oriented module developed is valid and got 87,37% of an average percentage of response, which includes great criteria

Recitation-Based Teaching Material Development for Cation Qualitative Analysis Learning Abudarin Abudarin; I Made Sadiana; Sri Wahyutami; Syarpin Syarpin; Chuchita Chuchita; Nurjennah Nurjennah
EduChemia (Jurnal Kimia dan Pendidikan) Vol 6, No 2 (2021)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

This study aims to develop recitation-based teaching materials for learning qualitative analysis of cations. The procedure for developing teaching materials adopts the 4-D development model (Define, Design, Develop, Dissemination) from Thiagarajan. The development results were tested theoretically and empirically. The theoretical feasibility test was carried out using expert judgment, including chemist expert, pedagogic expert, and learning media. Empirical feasibility was tested through legibility tests and limited implementation tests. Based on the expert assessment, the recitation method based teaching materials developed in this study is content valid with individual readability of 87,86% and group readability of 89,32%. The results of testing the implementation of teaching materials in the learning process showed that recitation-based teaching materials were effective, in guiding students to do independent learning activities with an effectiveness of 84,16%. The use of Cation Qualitative Analysis teaching materials based on the recitation method in online learning is effective in increasing student understanding of qualitative analysis of cations with an N-gain value of 0,81. The students' ability to complete study assignments with the help of worksheets on teaching materials has a positive correlation, with an increase in concept understanding (r = 0,91) with a contribution value of 88,43%.

The Application of Round Robin Techniques Cooperative Learning Model to Improve the Students’ Learning Outcomes Elfia Delina; Fitri Refelita
EduChemia (Jurnal Kimia dan Pendidikan) Vol 6, No 2 (2021)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

The development of education must be considered, because education can develop students' self-ability through the learning process. A teacher must have fun teaching skills to improve student learning outcomes. Therefore, This study aims to determine whether there is an increase in student chemistry learning outcomes with the application model of cooperative learning techniques in Round Robin. The method used is quasi-experimental with a nonequivalent control group design. The subjects in this study were class XI IPA 1 and XI IPA 2 SMAN 1 Tambang, Riau. Data collection techniques using homogeneity test, documentation, observation, pretest and posttest. The homogeneity test analysis on the sample used the Bartlett test and variance test, while the final data analysis used the t-test. The results showed that there was an effect of increasing student chemistry learning outcomes with the application model of cooperative learning techniques in Round Robin. This is evidenced by the difference in the posttest average of the experimental class of 85.65 and the control class of 76.77. Based on the dissimilarity of this posttest value, the normalized N-Gain value for the experimental class is 0.773 which includes the high criteria and the control class is 0.61 including the medium criteria.

Antioxidant Activity Test on Ethanol Extract Of Soursop Leaves (Annona muricata L.) Using DPPH Method (1,1-diphenyl-2-picrylhidrazyl) Abdul Gani; Ratih Delviyanti; Rusman Rusman
EduChemia (Jurnal Kimia dan Pendidikan) Vol 6, No 2 (2021)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Soursop plant parts that are often used by the community, namely the fruit and leaves. Ripe soursop fruit is usually developed to produce juice and lunkhead products. Ripe soursop fruit contains vitamin C which is known to have a wrong function, namely to increase immunity, so that it can protect the body from pathogens. Soursop leaves are often used by the community in the form of a decoction of the leaves for traditional medicine. The research about antioxidant test on ethanol extract of soursop leaves (Annona muricata Linn) had been conducted using DPPH method (1,1-diphenyl-2-picrylhdirazyl). This research aims to indicate the antioxidant activity of soursop leaves. Samples were collected from Lambaro Skep, a region of Banda Aceh. Then, the sample was dried by air before macerated using ethanol 96%. After that, the filtrate is evaporated using rotary evaporator and concentrated again using a hairdryer. The concentrated extract is then tested for antioxidant activity using DPPH method at maximum wavelength of 517 nm. The result shows young soursop leaves extract has 14.462 ppm of IC50 value, while old soursop leaves extract has IC50 value of 9.626 ppm.

Analysis on Students’ Understanding of Hydrocarbon Compounds in Organic Chemistry II Course Kriesna Kharisma Purwanto
EduChemia (Jurnal Kimia dan Pendidikan) Vol 6, No 2 (2021)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Hydrocarbon material is one of the organic chemical materials which is the basic concept for studying the next organic chemistry concept. Based on the result of observation, the average score of students in Organic Chemistry I course is 67.89. The result of this study indicates that students have difficulty of understanding in organic compounds. The objective of this research is to analyze the understanding on chemistry education students of hydrocarbon compounds in Organic Chemistry II course. The research design in this research is descriptive quantitative. The research subjects are students of the 2017 Chemical Education study program. There are 3 stages in the research, including pretest, implementation of learning, and posttest. The pretest aims to obtain data on students' initial knowledge of the material to be studied. Implementation of learning aims to improve students' understanding of hydrocarbon compound material, while posttest aims to measure the level of understanding of students after being given treatment. The conclusion of thisstudy is the students have highest difficulty in the topic hydrocarbon reactions (67.75%).

Introducing the Small-Scale Chemistry Approach Through Inquiry-Based Laboratory Activities For Pre-Service Teachers Fitria Fatichatul Hidayah; Muhamad Imaduddin; Eko Yuliyanto; Gunawan Gunawan; Muhammad Cholid Djunaidi
EduChemia (Jurnal Kimia dan Pendidikan) Vol 7, No 1 (2022)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v7i1.13084

This study introduces a small-scale chemistry (SSC) approach to inquiry-based practicum activities. SSC was introduced to train PCTs' laboratory skills so that they can be creative when teaching in schools in situations where it is not possible to obtain standard lab facilities. The research method is an action research model that includes four stages in the inquiry training process, namely (1) prescription-based practicum learning; (2) small-scale practical demonstrations; (3) small-scale chemistry practicum mentoring; (4) design and implementation of small-scale practicum designs. This research involved 15 Pre-service Chemistry Teachers (PCTs) who were in the Basic Chemistry practicum course. Data collection used documentation techniques for practical activities with an SSC approach, activity response interviews, and open response questionnaires. Instrument validity used face validity, while reliability was obtained by stability of observations. The results of the documentation and interviews were described as narrative, while the responses to the questionnaire were recapitulated and analyzed to obtain a bar chart. Videos were checked using the adequacy rubric which includes performance and procedures. 15 types of chemistry practicums with the SSC approach have been obtained. PCTs have also been able to choose the types of materials that are not only found specifically in the laboratory, but also materials that are easily found in daily lives to be used in school chemistry practical topics. PCTs also reflected that their understanding of the concept is getting better with practicals that are easy to do and their interest in implementing it further.

Development of Reasoning Multiple Choice Questions (RMCQs) to Analyze Higher Order Thinking Skills Diah Ayu Saputri; Mohammad Masykuri; Suryadi Budi Utomo
EduChemia (Jurnal Kimia dan Pendidikan) Vol 7, No 1 (2022)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v7i1.11791

The development of reasoning multiple choice questions (RMCQs) to analyze higher-order thinking skills is based on the need for appropriate assessment instruments to determine high-order thinking skills on learning requirements in the 21st century. The development used the model proposed by Thiagarajan, 4D-models with four process stages: (1) define; (2) design; (3) develop; (4) disseminate. The results were analyzed using the winstep application to obtain the value of validity, reliability, discriminatory power, distractor index, and difficulty level. The instrument has a good reliability coefficient, shown by the item reliability in the final test of 0.98, with the ability to distinguish three groups of samples, low, moderate, and high. 75% of the validity index and 80% of the distractor index function well, so the assessment instrument developed can be used to analyze high-order thinking skills. The assessment instrument is also applicative if used as an evaluation instrument in chemistry learning.

Preparation and Characterization of PVA/Na-CMC Hydrogel from OPEFB Cross-Linked by Maleic Anhydride Triana Kusumaningsih; Abu Masykur; aulia Syifa Aninditha; Maryam Rahmi Utami
EduChemia (Jurnal Kimia dan Pendidikan) Vol 7, No 1 (2022)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v7i1.12637

PVA/Na-CMC hydrogels were prepared from polyvinyl alcohol (PVA) and Na-CMC isolated from OPEFB. Maleic anhydrous (MA) was introduced as a crosslinking agent during the formation of the hydrogel process. The characterization of the PVA/Na-CMC hydrogels was carried out using Fourier Transform Infrared (FTIR), Scanning Electron Microscope (SEM), and physical characterization methods, including swelling ratio and gel fraction analysis. The addition of MA was observed to increase the number of crosslinks. The optimum PVA/Na-CMC hydrogel composition was achieved at a PVA: Na-CMC ratio of 5:3 (P5C3M), with a pore size of approximately 3.643 ± 0,913 μm, a swelling ratio of 3104%, and a gel fraction value of 72.72%.

Development of Biochemical Practice Guide Website Based on Guided Inquiry on Amilum Identification Materials Agustinus Ridwan; Masriani Masriani; Rody Putra Sartika; Hairida Hairida; Rini Muharini
EduChemia (Jurnal Kimia dan Pendidikan) Vol 7, No 1 (2022)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v7i1.12607

The COVID-19 pandemic has changed the paradigm of the online learning process, which was originally running offline. As a result, facilities and infrastructure, such as practical guidebooks used to support implementing practical activities, must adapt to online conditions. Website-based technology-assisted practicum guides are the right strategy for online learning. In addition, learning activities on the practicum guide website use a contextual approach, such as the guided inquiry method, to train students to develop their critical and scientific thinking skills. However, the reality on the ground shows that the practicum guide used is not website-based, so it has not been able to support learning during the COVID-19 pandemic, and the learning model used has not used the guided inquiry method. This study aims to develop a guided inquiry-based biochemical practicum guide website on starch identification material and determine the feasibility of the website as well as student and lecturer responses to the developed website. This research is development research using the Borg and Gall model. Their research stages consist of needs analysis, planning, product draft development, initial field trials, revisions, field trials, and revisions. The practicum guide website was validated by 11 experts consisting of 2 language experts and three experts in IT, materials, and guided inquiry learning. They collect feasibility data and student and lecturer responses using indirect communication assisted by questionnaires. The feasibility test results of linguistics, IT, inquiry learning, and material experts obtained percentages of 88.3%, 85.5%, 90.5%, and 91.1%, respectively. All aspects show a very decent category. Student responses at the initial field test stage, main field, and lecturer were 85.7%, 88.3%, and 90%, respectively. All aspects of the feasibility test, student and lecturer responses are in the very feasible category. The results of this study indicate that the guided inquiry-based biochemical practicum guide website on starch identification material is very feasible to use. This practicum guide website is expected to help carry out a biochemistry practicum during the COVID-19 pandemic and improve students' thinking skills

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Editorial Address Department of Chemistry Education - Universitas Sultan Ageng Tirtayasa Address : Jl. Ciwaru Raya No. 25, Sempu, Kota Serang, Banten 42117, Indonesia

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Contact Name
Indah Langitasari

Contact Email
educhemia@untirta.ac.id

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-

Journal Mail Official
educhemia@untirta.ac.id

Editorial Address
Department of Chemistry Education - Universitas Sultan Ageng Tirtayasa Address : Jl. Ciwaru Raya No. 25, Sempu, Kota Serang, Banten 42117, Indonesia

Location
Kab. serang,

Banten

INDONESIA