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Setia Rahmawan
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Journal of Tropical Chemistry Research and Education
Published by Universitas Islam Negeri Sunan Kalijaga Yogyakarta
ISSN : 2685144X     EISSN : 26855690     DOI : https://doi.org/10.14421/jtcre2020.22-01
Core Subject : Science, Education,
Chemistry Education
This journal encompasses original research article and review articles related tropical chemistry, but it is not restricted to, including: Lab based research Teaching & Learning Material Learning Learning Media/Multimedia Evaluation & Assessment Higher Order Thinking Skills Science, Technology, Engineering, and Mathematics (STEM) Education Chemical Content Learning Strategy School Laboratory Experiment
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 84 Documents
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Pengembangan Modul Kimia berbasis Model Core Materi Larutan Penyangga untuk Peserta Didik Kelas XI SMA/MA Ayu Wahdini
Journal of Tropical Chemistry Research and Education Vol. 5 No. 1 (2023)
Publisher : Chemistry Education Department, Faculty of Tarbiyah and Education, UIN Sunan Kalijaga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/jtcre.2023.51-03

Abstract

Penelitian ini bertujuan untuk mengembangkan media berupa modul kimia berbasis CORE pada materi larutan penyangga serta mengetahui kelayakan produk berdasarkan hasil penilaian pendidik kimia SMA/MA dan respon dari peserta didik kelas XII. Penelitian ini termasuk dalam penelitian dan pengembangan. Model pengembangan yang digunakan adalah model 4D (Define, Design, Development, dan Disseminate). Produk yang dikembangkan divalidasi oleh dosen ahli materi dan dosen ahli media. Penilaian produk juga dilakukan oleh empat pendidik kimia SMA/MA serta direspon oleh 20 peserta didik. Instrumen penelitian berupa lembar validasi, penilaian kualitas produk dan lembar respon peserta didik. Produk yang telah dikembangkan merupakan modul dalam bentuk softfile. Modul berisi materi larutan penyangga yang disusun berdasarkan karakteristik model CORE memuat materi larutan penyangga, contoh soal, latihan soal, soal analisis, dan kegiatan yang dapat dilakukan secara mandiri oleh peserta didik. Hasil validasi oleh dosen ahli menyatakan bahawa modul layak digunakan dengan persentase keidealan berdasarkan ahli materi 91,67% dan persentase keidealan 96,67% berdasarkan ahli media. Hasil penilaian kualitas produk berdasarkan pendidik kimia memperoleh persentase keidealan sebesar 88.61 % dengan kategori Sangat Baik. Hasil respon peserta didik terhadap modul sangat positif dengan persentase keidealan sebesar 98.23%.
Pengaruh Model Pembelajaran Guided Inquiry terhadap Critical Thinking dan Collaborative pada Materi Asam Basa Anugrah Anang Respati
Journal of Tropical Chemistry Research and Education Vol. 5 No. 1 (2023)
Publisher : Chemistry Education Department, Faculty of Tarbiyah and Education, UIN Sunan Kalijaga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/jtcre.2023.51-04

Abstract

Pembelajaran pada kurikulum 2013 ini pendidik dituntut untuk menerapkan proses pembelajaran berbasis penelitian. Salah satu model pembelajaran dalam implementasi kurikulum 2013 adalah model pembelajaran inquiry. Penelitian ini merupakan penelitian kuasi eksperimen dengan desain nonequivalent control group design. Penelitian ini bertujuan untuk mengkaji pengaruh model pembelajaran guided inquiry terhadap critical thinking pada materi asam basa serta pengaruh model pembelajaran guided inquiry terhadap collaborative pada materi asam basa. Populasi dalam penelitian adalah seluruh peserta didik kelas XI IPA MAN 3 Sleman 2019/2020. Sampel yang digunakan adalah kelas eksperimen dan kelas kontrol. Instrumen yang digunakan adalah angket, lembar observasi dan soal pretest dan posttest. Analisis data untuk angket dan lembar observasi menggunakan uji non paramterik yaitu uji Mann Whitney. Analisis data untuk soal pretest dan posttest menggunakan uji independent sample t-test. Uji hipotesis penelitian menggunakan uji non parametrik dengan menggunakan uji Mann Whitney. Hasil penelitian menunjukan bahwa (1) ada pengaruh model pembelajaran guided inquiry terhadap critical thinking pada materi asam basa berdasarkan hasil angket, observasi. Namun, tidak ada pengaruh berdasarkan hasil tes dikarenakan faktor penyajian soal memiliki tingkat kesukaran yang masih tergolong mudah dan sedang; (2) ada pengaruh yang siginifikan pada model pembelajaran guided inquiry terhadap collaborative pada materi asam basa berdasarkan hasil angket dan observasi. Hal ini menunjukkan bahwa penggunaan model pembelajaran guided inquiry dapat mempengaruhi critical thinking dan collaborative peserta didik.
Synthesis of Halogen Substituted Chalcone Againts Cervical Cancer (HeLa) Cell Lines using Green Method Retno Aliyatul Fikroh
Journal of Tropical Chemistry Research and Education Vol. 5 No. 1 (2023)
Publisher : Chemistry Education Department, Faculty of Tarbiyah and Education, UIN Sunan Kalijaga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/jtcre.2023.36-43

Abstract

Cervical cancer is the second leading cause of death in women. Many cancer treatments currently provide toxic effects on normal cells. Therefore, alternative treatment using chalcone derivatives has potent anticancer properties that can help reduce cancer side effects. Chalcone derivatives with halogen and methoxy groups in ring B can potentially inhibit cancer cells. This research aimed to synthesize halogen-substituted chalcone by a green chemistry approach and determine activity against cervical cancer (HeLa) cell lines. The Claisen-Schmidt reaction was used to synthesize 2'-hydroxy-2-bromo-4,5-dimethoxychalcone using a grinding technique. The purity of the synthesized compound was determined using thin-layer chromatography and melting range. The compounds' structures were characterized using FTIR, MS 1H, and 13C-NMR. The result showed that the synthesized compound was yielded in 53% as a yellow solid. In vitro cytotoxicity of the synthesized chalcone was evaluated by the MTT assay method. The IC50 of the compound was 67,23 μg/mL as a moderate activity inhibiting cervical cancer (HeLa) cell lines. Based on the IC50 value, this compound can be a candidate for anticancer against Cervical cancer (HeLa) cell lines
Students' Chemistry Multiple Representation Ability in Voltaic Cell Materials Dea Santika Rahayu; Meili Yanti; Ayu Lestari
Journal of Tropical Chemistry Research and Education Vol. 5 No. 1 (2023)
Publisher : Chemistry Education Department, Faculty of Tarbiyah and Education, UIN Sunan Kalijaga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/jtcre.2023.51-06

Abstract

Multiple representation ability is a student's understanding of describing a concept at three chemical representation levels: macroscopic, submicroscopic, and symbolic. This ability represents a complete understanding of chemistry, so every teacher needs to know. This research was conducted to analyze students' multiple representation abilities in voltaic cell material using the Predict-Observe-Explain (POE) diagnostic test. This study uses a qualitative descriptive method to obtain an overview of the ability of multiple representations naturally. The instrument uses the POE diagnostic test, has been validated by five validators consisting of lecturers and chemistry teachers and has been tested to obtain instrument legibility. The research subjects involved 34 class XII high school students who had studied voltaic cell material. The findings of the ability profile of multiple representations include (1) the concept of voltaic cell construction; most students (32.35%) are able to understand the constructs at the macroscopic and symbolic levels accompanied by explanations at the submicroscopic level that are not correct, (2) the concept of calculating values standard cell potential, as many as 44.12% of students were able to observe (macroscopic) and calculate (symbolic) the standard cell potential value accompanied by an inaccurate submicroscopic level explanation, (3) most students (32.35%) were not correct in explaining cell voltaic in alkaline batteries at the macroscopic and submicroscopic levels accompanied by writing at the appropriate symbolic level, and (4) the concept of corrosion, most students (35.29%) were able to explain corrosion phenomena at the macroscopic and symbolic levels accompanied by explanations at the submicroscopic level which less correct.
Local Wisdom Batak Toba and Nias Related to Chemical Content Simanjuntak, Akezia
Journal of Tropical Chemistry Research and Education Vol. 6 No. 1 (2024)
Publisher : Chemistry Education Department, Faculty of Tarbiyah and Education, UIN Sunan Kalijaga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/jtcre.2024.61-01

Abstract

This article talks about the local wisdom of the Batak Toba and Nias with the subject of chemistry. This article uses a qualitative method. The data collection techniques used are interview techniques and documentation, where the resource persons in this research are Selamat Sihombing (Batak Toba) And Gatina Halawa (Nias). The relationship between Toba Nias Batak culture and Chemistry shows that there is a tight relationship between culture and Chemistry. So every culture has good chemical elements in its manufacture, mixing, and so on., the results studies obtained conclusions of chemistry are all around us and also in the local wisdom of the Batak Toba and Nias.
Zn, Fe, Se, and I concentrations present in tomato as affected by neem extract preservation in Sokoto, Nigeria Yusuf
Journal of Tropical Chemistry Research and Education Vol. 5 No. 2 (2023)
Publisher : Chemistry Education Department, Faculty of Tarbiyah and Education, UIN Sunan Kalijaga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/jtcre.2023.52-01

Abstract

Nowadays addition of chemicals to save tomatoes against early spoilage is rampant, but the chemicals are harmful; thus, bio-based alternative with novel features are needed. The aim of this study was to discover the effect of using neem leaves extract for preservation of two tomato cultivars collected from Sokoto, Nigeria. 5%, 10% and 25% (w/v) aqueous solutions of neem extract to be used to coat tomatoes were prepared and an experiment was done in a randomized control trial. Consequently, with the addition of neem extract for preservation of tomato; Zn, Fe, Se, and I were assessed in Daneka tomato variety using atomic absorption spectrometry. The Fe level increase from 13.0 ± 0.05 ppm to 16.1 ±0.01 ppm. Selenium increase from 2.0 ± 0.05 ppm to 5.2 ± 1.5 ppm, iodine increase from 6.2 ± 0.02 to 8.0 ± 0.02 ppm in Daneka, and zinc increase from 14.0 ± 0.5 to 18.0 ± 0.2 ppm. The ranges of the determined Fe, Se, Zn, and I micronutrients in UTC tomato variety are respectively as follows: 14.0± 0.03 to 18.0± 0.03 ppm, 3.1± 0.03 to 7.0± 0.01 ppm, 15.6± 0.04 to 18.0± 0.01 ppm, and 7.0± 0.02 to 9.1± 0.02 ppm. Therewith, the concentrations of micronutrients increase with an increase in neem extract concentrations (p < 0.05). more studies are needed to make neem extract as a cheap, safe, and accessible substance for tomato preservation.
Pengembangan Modul Kimia berbasis Relating, Experiencing, Applying, Cooperating dan Transfering (REACT) bermuatan Etnokimia Anisatul Insyiroh
Journal of Tropical Chemistry Research and Education Vol. 5 No. 2 (2023)
Publisher : Chemistry Education Department, Faculty of Tarbiyah and Education, UIN Sunan Kalijaga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/jtcre.2023.52-02

Abstract

Penelitian pengembangan ini bertujuan untuk mengembangkan modul kimia berbasis relating, experiencing, applying, cooperating dan transferring (REACT) bermuatan etnokimia pada materi asam basa dan mengetahui kualitas produk berdasarkan penilaian ahli materi,ahli media, guru kimia dan respon peserta didik. Penelitian ini merupakan penelitian pengembangan (Research & Development) dengan model pengembangan ADDIE yang terdiri dari 5 tahap yaitu analysis, design, development, implementation, dan evaluation. Namun penelitian ini dibatasi sampai tahap ketiga yaitu development. Penilaian kualitas produk dilakukan oleh satu ahli materi, satu ahli media, empat guru Kimia SMA/MA dan direspon oleh sepuluh peserta didik SMA/MA. Instrumen penelitian berupa lembar penilaian kualitas produk dengan skala Likert dan lembar respon siswa skala Guttman. Teknik analisis data yang digunakan yaitu dengan mengubah data kualitatif menjadi data kuantitatif. Hasil produk pengembangan berupa modul berukuran B5 berisi materi asam basa yang disusun sesuai dengan rangkaian strategi pembelajaran REACT dan dilengkapi dengan muatan etnokimia. Hasil penilaian ahli materi memperoleh persentase 91,8% dengan kategori Sangat Baik (SB), penilaian ahli media memperoleh persentase 92,63% dengan kategori Sangat Baik (SB), dan penilaian guru Kimia SMA/MA memperoleh persentase 92,5% dengan kategori Sangat Baik (SB). Sedangkan respon peserta didik terhadap produk sangat positif dengan persentase 96,7%.
Pengembangan Buku Pengayaan berbasis Kontekstual pada Materi Pencemaran Air sebagai Alternatif Sumber Belajar Mandiri Suemi
Journal of Tropical Chemistry Research and Education Vol. 5 No. 2 (2023)
Publisher : Chemistry Education Department, Faculty of Tarbiyah and Education, UIN Sunan Kalijaga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/jtcre.2023.52-03

Abstract

Penelitian pengembangan ini bertujuan untuk mengembangkan buku pengayaan berbasis kontekstual pada materi pencemaran air sebagai alternatif sumber belajar mandiri peserta didik SMA/MA dan mengetahui kualitas buku pengayaan yang telah dikembangkan dan mengetahui respon peserta didik terhadap buku pengayaan yang telah dikembangkan. Penelitian ini merupakan penelitian pengembangan (Research & Development) dengan model pengembangan 4D yaitu define (pendefinisian), design (perancangan), development (pengembangan), dan disseminate (penyebarluasan). Penelitian ini hanya dilakukan sampai tahap development (pengembangan). Kualitas produk dinilai oleh satu dosen ahli materi, satu dosen ahli media, empat pendidik SMA/MA dan direspon oleh sepuluh peserta didik SMA/MA kelas X. Instrumen penelitian yang digunakan yaitu lembar penilaian kualitas produk dengan skala Likert dan lembar respon peserta didik skala Guttman. Teknik analisis data dilakukan dengan mengubah data hasil penilaian dan respon yang berupa data kualitatif menjadi data kuantitatif. Kemudian dianalisis setiap aspeknya dengan pedoman kriteria kategori penilaian ideal dan presentase keidealan untuk menentukan kualitas buku pengayaan yang dikembangkan. Hasil penelitian menunjukkan bahwa buku pengayaan berbasis kontekstual pada materi pencemaran air sebagai alternatif sumber belajar peserta didik dari penilaian ahli materi mendapatkan kategori baik (B) dengan presentase keidealan 80%. Penilaian ahli media mendapatkan kategori sangat baik (SB) dengan presentase keidealan 86% dan penilaian pendidik SMA memperoleh kategori sangat baik (SB) dengan presentase keidealan 89,29% serta respon 10 peserta didik mendapatkan presentase keidealan 90,83%.
Pengembangan Buku Teks bermuatan Higher Order Thinking Skills (HOTS) pada materi Gugus Fungsi Kamaludin, Agus; Ismiatun
Journal of Tropical Chemistry Research and Education Vol. 5 No. 2 (2023)
Publisher : Chemistry Education Department, Faculty of Tarbiyah and Education, UIN Sunan Kalijaga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/jtcre.2023.52-04

Abstract

Penelitian ini bertujuan untuk pengembangan buku teks bermuatan Higher Order Thinking Skill (HOTS) pada materi gugus fungsi. Model pengembangan dalam penelitian ini menggunakan model pengembangan ADDIE yang terdiri dari tahap analyze, design, development, implementation, dan evaluation. Penilaian produk dilakukan oleh satu ahli materi, satu ahli media, empat guru kimia SMA/MA dan direspon oleh sepuluh siswa. Instrumen penelitian berupa lembar validasi ahli, lembar penilaian kualitas produk dan lembar respon siswa. Produk berupa buku teks bermuatan HOTS pada materi gugus fungsi. Buku teks ini memuat materi gugus fungsi sesuai kompetensi kurikulum 2013 yang dibagi ke dalam 7 subbab yaitu pengertian gugus fungsi, alkohol, eter, aldehid, keton, asam karboksilat, serta ester. Hasil penelitian menunjukan bahwa penilaian oleh ahli materi memperoleh skor rata-rata 45 dari skor maksimal 50 dengan persentase keidealan 90% sehingga termasuk dalam kategori sangat baik (SB). Hasil validasi oleh ahli media memperoleh skor 30 dari skor maksimal 30 dengan persentase keidealan 100% dan termasuk dalam sangat baik (SB). Hasil penilaian dari empat guru kimia SMA/MA memperoleh skor rata-rata 69,5 dari skor maksimal ideal 80 dengan persentase keidealannya 86,86% dan termasuk kategori sangat baik (SB). Buku ini juga direspon positif oleh siswa dengan persentase sebesar 98%.
Culinary in Islamic-Javanese Cultural Heritage from a Chemistry Perspective Zamhari, Muhammad
Journal of Tropical Chemistry Research and Education Vol. 5 No. 2 (2023)
Publisher : Chemistry Education Department, Faculty of Tarbiyah and Education, UIN Sunan Kalijaga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/jtcre.2023.52-05

Abstract

Food plays a significant role in the religious rituals of Java, specifically within the realm of Islam, where special foods are prepared and consumed during religious ceremonies and celebrations, imbuing spiritual practices with a unique cultural essence. Understanding the chemistry behind these foods is essential for comprehending their health benefits and their embodiment of noble values within Javanese and Islamic cultures. This article seeks to delve into the chemistry of various cultural heritage foods from an Islamic-Javanese standpoint. To achieve this, a thorough literature review was conducted, focusing on culinary practices embedded within the Islamic-Javanese cultural heritage and exploring the corresponding chemical explanations. The research employed a systematic and meticulous search across academic databases, online libraries, and search engines to gather a broad range of perspectives, theories, and empirical evidence. Food, as a reflection of culture, serves both practical and symbolic roles within a particular cultural community. It serves as a manifestation of the values, traditions, and identity of the cultural group, while also meeting the physiological needs of individuals by providing essential nutrients and energy. Beyond mere sustenance, food holds utilitarian value by ensuring survival and promoting overall well-being. By delving into the chemistry of these cultural heritage foods, this article aims to shed light on their significance within the Islamic-Javanese context, uncovering the intricate interplay between chemistry, culture, and spirituality.

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