Hydrogen: Jurnal Kependidikan Kimia
Hydrogen: The Chemistry Education Journal published by the Chemistry Education Study Program which contains articles raised from the results of conceptual research and studies in chemistry and chemistry education including education and learning, device development, media and learning models.
Articles
20 Documents
Search results for
, issue
"Vol 12, No 3 (2024): June-July 2024"
:
20 Documents
clear
<![CDATA[The Relationship between Drinking Water Consumption, Nutritional Status and Workload with The Incidence of Heat Strain in Tofu-Making Workers in West Kekalik Sub-District ]]>
<![CDATA[Ayu, Baiq Fathin]]>;
<![CDATA[Kardi, Kardi]]>;
<![CDATA[Wanda, Janur]]>
<![CDATA[ Hydrogen: Jurnal Kependidikan Kimia Vol 12, No 3 (2024): June-July 2024 ]]>
Publisher : <![CDATA[Universitas Pendidikan Mandalika ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.33394/hjkk.v12i3.12373
<![CDATA[Various cases of accidents and occupational diseases, as well as other health problems are often caused by unqualified work environment factors, Workers in a hot environment are one of the causes of workers experiencing occupational diseases. Heat strain is an acute or chronic impact caused by exposure to heat stress experienced by a person from physical and mental aspects. The physical impact caused by heat strain ranges from mild complaints such as skin rashes to fainting to life-threatening situations when there is a cessation of sweating and heat stroke. Tofu making is one of the hot working environments. This study uses a quantitative method with a sampling technique using a purposive sampling technique. The sample in this study is 44 tofu makers. The data collection technique uses questionnaires and pulse measurement. Data analysis uses the Spearman Rank test. The results showed that there was a relationship between drinking water consumption and heat strain activity with a value (p = 0.000), there was no relationship between BMI (p = 0.113) and there was a relationship between workload and heat strain incidence (p = 0.000) and heat strain complaints in tofu factory workers. It is expected that workers consume >11 glasses of drinking water and use clothes that can reflect heat such as wearing thin clothes, wearing loose shirts and easily absorbing sweat.]]>
<![CDATA[Exploration of Student Thinking Systems Through STEM-PjBL Project Based Learning in the Science Field ]]>
<![CDATA[Sukarma, I Ketut]]>;
<![CDATA[Hulyadi, Hulyadi]]>;
<![CDATA[Muhali, Muhali]]>;
<![CDATA[Azmi, Irham]]>
<![CDATA[ Hydrogen: Jurnal Kependidikan Kimia Vol 12, No 3 (2024): June-July 2024 ]]>
Publisher : <![CDATA[Universitas Pendidikan Mandalika ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.33394/hjkk.v12i3.12273
<![CDATA[The complexity of science concepts which are interrelated with each other requires the competence to think systematically. Complex thinking which is the basis for critical, analytical, creative and metacognitive thinking is very important to master in responding to the challenges of the 21st century. The aim of this research is to explore students' thinking systems taught using the STEM-PjBL model. This research is quantitative descriptive research. The variables studied are students' thinking systems based on the ability to determine components that influence each other in the bioethanol synthesis and dehydrator processes. The population in the study was 17 students. Students are distributed in two semesters, namely semesters II and IV. The research uses pre-test and post-test systematic thinking ability tests as data collection techniques and tools. The test consists of 5 essay questions that assess students' systematic thinking competence, and the test used is analyzed for validity, discrimination power, and level of difficulty before use. This test was developed based on indicators of systematic thinking competency. Tests were given to students before and after carrying out project activities for making and dehydrating bioethanol. After carrying out the project, students strengthen their competence through computational simulations related to the project being carried out. The data obtained is then presented in a communicative graph. The research results showed that 35.2% had high system thinking, 29% medium, 35.6% low. These results show that the application of the STEM-PjBL model is able to foster students' systematic thinking competency.]]>
<![CDATA[Review of Secondary Metabolites From Melandean Bark Extract (Bridellia Micrantha): Bioactive Potential and Applications in Health ]]>
<![CDATA[Bayani, Faizul]]>;
<![CDATA[Muhali, Muhali]]>;
<![CDATA[Yuliana, Devi]]>;
<![CDATA[Hulyadi, Hulyadi]]>;
<![CDATA[Gargazi, Gargazi]]>
<![CDATA[ Hydrogen: Jurnal Kependidikan Kimia Vol 12, No 3 (2024): June-July 2024 ]]>
Publisher : <![CDATA[Universitas Pendidikan Mandalika ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.33394/hjkk.v12i3.11956
<![CDATA[Abstract The emergence of various diseases affecting the immune system, such as COVID-19 and Hand, Foot, and Mouth Disease, demands serious attention. Current climate changes occurring in almost all parts of the world can lead to the emergence of various viruses and bacteria that cause multiple diseases. Exploring medicinal plants that can enhance the immune system is crucial to be continued. This study aims to identify secondary metabolite compounds contained in Bridellia Micrantha plants using chemical reagents and gas chromatography-mass spectrometry (GC-MS) instruments. This research is an experimental laboratory study. The variable studied is the content of secondary metabolite compounds. Data were collected using chemical reagents and instruments. The obtained data are described in informative tables and graphs. Based on the identification results using instruments, positive results were found for organic compound groups such as flavonoids, alkaloids, and tannins. GC-MS test results showed that the organic compounds contained in Bridellia Micrantha extract are 43.05% hexadecanoic acid, 21.46% oleic acid, 16% docos-13-enoic acid, 3.89% octadecanal, 1.85% propanediol, and 0.91% trans-phytol. Literature reviews indicate that the organic acids in Bridellia micrantha extract have clinical activities as antioxidants and anti-inflammatory agents, while organic compounds containing hydroxyl groups have clinical activities as anti-cancer agents. Based on these findings, Bridellia micrantha extract has the potential as a medicine that can enhance the body's immunity. ]]>
<![CDATA[Development of LKPD based on project-based learning oriented chemo-entrepreneurship on hydrocarbon material for phase F SMA/MA ]]>
<![CDATA[Velly, Aglin]]>;
<![CDATA[Suryani, Okta]]>
<![CDATA[ Hydrogen: Jurnal Kependidikan Kimia Vol 12, No 3 (2024): June-July 2024 ]]>
Publisher : <![CDATA[Universitas Pendidikan Mandalika ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.33394/hjkk.v12i3.12442
<![CDATA[This development research was conducted to develop a teaching material in the form of a project-based learning worksheet (LKPD) based on chemo-entrepreneurship-oriented learning on hydrocarbon material for phase F SMA / MA. The validity and level of practicality will be known. The type of research used is educational design research (EDR) with the Plomp development model which has three stages, namely preliminary research (initial investigation), prototyping phase (prototype formation stage), and assessment phase (assessment/testing). However, the assessment phase was not carried out in this study where the research was carried out until the results of the validity and practicality of the LKPD were obtained. The validity test was conducted by 3 chemistry lecturers at FMPA UNP and 2 chemistry teachers at SMAN 3 Padang using a validity questionnaire sheet. Practicality was conducted by 2 chemistry teachers and 9 students of phase F SMAN 3 Padang. The results of the study based on the validity test showed an average Aiken'V 0.87 with a valid category and based on the practicality test showed an average of 90% by students with a very practical category and 94% by teachers with a very practical category. The research results of project-based learning-based LKPD oriented chemo-entrepreneurship on hydrocarbon material for phase F SMA / MA have been valid and practical.]]>
<![CDATA[Synthesis of Colorimetric Sensor for Cyanide Detection with Iron(III) Chloride reagent Using Sol Gel Method with Smarthphone Combination ]]>
<![CDATA[Rohsaita, Amalia]]>;
<![CDATA[Thohir, Muhammad Bakhru]]>;
<![CDATA[Surya Efendi, Meilisa Rusdiana]]>;
<![CDATA[Kusumaning Tiyas, Windi Pangesti]]>;
<![CDATA[Nursaida, Marta Citra]]>
<![CDATA[ Hydrogen: Jurnal Kependidikan Kimia Vol 12, No 3 (2024): June-July 2024 ]]>
Publisher : <![CDATA[Universitas Pendidikan Mandalika ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.33394/hjkk.v12i3.11887
<![CDATA[Sensor untuk mendeteksi ion sianida (CN - ) telah berhasil dilakukan dengan metode sol-gel menggunakan prekursor tetraetil ortosilikat dan pereaksi FeCl3. Penelitian ini bertujuan untuk mengetahui kondisi optimal sintesis, kondisi optimal sensor, menentukan LoD dan LoQ. Sintesis dilakukan dengan mencampurkan prekursor dengan pelarut etanol. Selanjutnya ditambahkan H2O, Triton X-100, reagen dan katalis ke dalam campuran. Variasi yang dilakukan adalah konsentrasi reagen dan waktu penuaan terbaik. Hasil sensor dinyatakan dalam nilai Euclidean Distance (ED) titik Merah-Hijau-Biru (RGB) yang diperoleh. Kondisi optimal untuk penyensoran dilakukan dengan memvariasikan waktu kontak. Pada sintesis sol gel konsentrasi reagen terbaik diperoleh pada konsentrasi 0,1 M dan waktu penuaan terbaik adalah 4 hari. Penentuan kondisi sensor optimal terjadi pada waktu 30 detik dengan batas pencucian 120 detik. Validasi metode sensor menghasilkan linearitas pada rentang konsentrasi 100 – 1000 ppm dengan nilai R 2 sebesar 0,9984. LoD dan LoQ masing-masing sebesar 65,45 ppm dan 218,16 ppm. Karakterisasi sensor menggunakan spektrofotometer FTIR dari bilangan gelombang 4000 sampai 400 cm-1. Spektrum IR yang dihasilkan menunjukkan keberhasilan dalam sintesis sol-gel, karena pada penelitian ini SiO2 muncul pada bilangan gelombang sekitar 433 cm-1. Setelah tahap sensor dengan merendam sensor pada analisa CN - 0,01 M dan CN - 0,1 M tidak ada tanda-tanda munculnya gugus Fe-S pada bilangan gelombang 4000-400 cm-1, karena daerah serapannya berada pada 380- 311 cm -1.]]>
<![CDATA[Development of Cooperative Learning-Based Student Worksheets (LKPD) on Chemical Nomenclature Subject Material for 10th Grade Students ]]>
<![CDATA[Septiana, Tri Merry]]>;
<![CDATA[Sartika, Rody Putra]]>;
<![CDATA[Rasmawan, Rahmat]]>
<![CDATA[ Hydrogen: Jurnal Kependidikan Kimia Vol 12, No 3 (2024): June-July 2024 ]]>
Publisher : <![CDATA[Universitas Pendidikan Mandalika ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.33394/hjkk.v12i3.10761
<![CDATA[AbstractResearch has been done to develop a product in the form of student worksheets chemical compounds for SMA/MA grade X. This research aims to develop students ' worksheets of material nomenclature for SMA/MA grade X, knowing the quality of teaching materials based on expert test (expert judgement), knowing student response, and knowing the implementation of learning process. This research and development (R&D) is conducted based on 4-D models that are limited to the develop stage. The subject of this study is the LKPD based on cooperative learning in compound nomenclature. The product is in the quality of one chemical teacher, one Indonesian teacher, and two chemistry lecturers. Based on the results of the expert quality assessment, the LKPD based cooperative learning in compound name matter got very good/very high category with a percentage of 84.27% worth using as a teaching material in the learning process. Keywords: LKPD, Cooperative Learning, feasibility of the product]]>
<![CDATA[Development Problem-BasedLearning Oriented E-worksheet To Train Analytical Skills On Chemical Equilibrium Material ]]>
<![CDATA[Damayanti, Vivi]]>;
<![CDATA[Novita, Dian]]>
<![CDATA[ Hydrogen: Jurnal Kependidikan Kimia Vol 12, No 3 (2024): June-July 2024 ]]>
Publisher : <![CDATA[Universitas Pendidikan Mandalika ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.33394/hjkk.v12i3.12189
<![CDATA[The purpose of this study is to discuss the possibility of using a problem-based learning-oriented e-worksheet to teach students analytical skills on chemical equilibrium material. The feasibility of E-LKPD may be assessed in terms of validity, practicality, and efficacy. The approach employed in this study is Research and Development (R&D), utilizing the 4D development process derived by Tiagharajan, which covers Define, Design, Develop, and Disseminate. Based on the findings of the research, the e-worksheet earned mode 3 on the validation sheet, indicating that it is legitimate. The e-worksheet was deemed extremely practical based on the findings of the student response questionnaire, with a percentage of 86.44%. The e-worksheet is certified effective in terms of analyzing t test findings with a significance value of 0.00, implying that Ho is rejected and Ha is accepted. The n-gain score for analytical skills was 0.55 on element analysis, 0.59 on relationship analysis, and 0.59 on organizing analysis. Based on these findings, it is possible to infer that the problem-based learning-oriented e-worksheet produced to educate students' analytical abilities on chemical equilibrium content is suitable for usage. ]]>
<![CDATA[Validity Test of E-LKPD to Improve Students' Argumentation Skills on Chemical Equilibrium Material ]]>
<![CDATA[Andreani, Lucky Arthamevia]]>;
<![CDATA[Yonata, Bertha]]>
<![CDATA[ Hydrogen: Jurnal Kependidikan Kimia Vol 12, No 3 (2024): June-July 2024 ]]>
Publisher : <![CDATA[Universitas Pendidikan Mandalika ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.33394/hjkk.v12i3.11500
<![CDATA[Dalam bidang pendidikan kimia, peserta didik diharapkan dapat mengembangkan keterampilannya sesuai dengan keterampilan yang dibutuhkan pada abad ke-21. Salah satu kompetensi kerangka 4C adalah berpikir kritis dan keterampilan komunikasi. Kedua kompetensi ini dikemas menjadi satu kesatuan dalam keterampilan argumentasi. Keterampilan argumentasi berperan dalam melatih siswa mengembangkan kemampuan berpikirnya sehingga meningkatkan pemahamannya. Tujuan penelitian ini adalah mengembangkan e-LKPD yang valid untuk meningkatkan kemampuan argumentasi siswa dalam konteks kesetimbangan kimia. Metodologi penelitian yang digunakan dalam penelitian ini adalah Research and Development (R&D) dengan menggunakan model pengembangan 4D yang dikemukakan oleh Thiagarajan, yang meliputi tahapan sebagai berikut: pendefinisian, perancangan, pengembangan, dan penyebaran. Namun penelitian ini hanya sebatas tahap pengembangan dengan uji coba terbatas untuk mengetahui kelayakan produk. Keterbatasan ini didasarkan pada beberapa pertimbangan antara lain waktu, tenaga, dan kendala. Validasi dilakukan oleh tiga orang validator yang terdiri dari dua orang dosen program studi pendidikan kimia dan satu orang guru mata pelajaran kimia. Skor validitas yang dihasilkan kemudian dianalisis menggunakan metode mode. Hasil penelitian menunjukkan bahwa E-LKPD valid ditinjau dari validitas isi. Nilai modus untuk kategori ini adalah 5 yang menunjukkan hasil yang sangat valid]]>
<![CDATA[Development of LKPD Based on Project Based Learning Stoichiometry Material by Utilizing Organic Waste for Phase F SMA/MA ]]>
<![CDATA[Rahmad, Nafisah Yulia]]>;
<![CDATA[Suryani, Okta]]>
<![CDATA[ Hydrogen: Jurnal Kependidikan Kimia Vol 12, No 3 (2024): June-July 2024 ]]>
Publisher : <![CDATA[Universitas Pendidikan Mandalika ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.33394/hjkk.v12i3.12443
<![CDATA[The project-based learning model is one of the learning models that supports the application of concepts in everyday life. From the results of the questionnaire given, Project Based Learning-based LKPD is needed and it is very important to compile Project Based Learning-based stoichiometry LKPD in supporting learning in the era of an independent curriculum. The type of research used is development research or Educational Design Research (EDR) with the Plomp development model by Tjeerd Plomp. The research was conducted at SMA Negeri 4 Padang with research subjects namely 3 Chemistry Lecturers FMIPA UNP, 2 SMA Negeri 4 Padang teachers and 9 students of class XI SMA Negeri 4 Padang. The object of research is LKPD based on project-based learning on stoichiometry material by utilizing organic waste for phase F SMA / MA. In terms of research, Plomp as a development study has 3 main stages, namely the initial research stage, the prototype formation stage, and the assessment stage. The results showed that all aspects assessed in each component of the validation of project-based learning-based LKPD on stoichiometry material by utilizing organic waste for phase F SMA / MA obtained an average V value of 0.92 with a valid category. The results are very practical for teachers with an average practicality of 91% and practicality for students is very practical with an average practicality of 89%. Based on the results of the study, it was found that the development of LKPD based on project-based learning on stoichiometric material by utilizing organic waste for phase F SMA / MA was developed valid and practical.]]>
<![CDATA[The Influence of the Anchored Instruction Model assisted by PHET on Students' Problem Solving Abilities ]]>
<![CDATA[Dewi, Bq Intan Patmala]]>;
<![CDATA[Verawati, Ni Nyoman Sri Putu]]>;
<![CDATA[Hikmawati, Hikmawati]]>;
<![CDATA[Rahayu, Satutik]]>
<![CDATA[ Hydrogen: Jurnal Kependidikan Kimia Vol 12, No 3 (2024): June-July 2024 ]]>
Publisher : <![CDATA[Universitas Pendidikan Mandalika ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.33394/hjkk.v12i3.12179
<![CDATA[Abstract This research aims to test the effect of the anchored instruction model assisted by PhET on students' physics problem solving abilities in optical instruments at SMAN 1 Sukamulia. The type of research used is quasi experimental with a pretest-posttest control group design. The population is all students in class XI MIPA SMAN 1 Sukamulia, totaling 52 people. The research sample was taken using a saturated sampling technique and class XI MIPA 1 was selected as the experimental class and class XI MIPA 2 was selected as the control class. The experimental class was treated with an anchored instruction model assisted by PhET and the control class was treated with a direct learning model. The research instrument consists of a problem solving ability test (KPM) in the form of a description test of 10 questions taking into account validity, reliability, level of difficulty and differentiability of questions. The KPM pre-test and post-test data were tested for normality and homogeneity, then continued with hypothesis testing using the twin sample t-test. Hypothesis test results obtained that the calculated t value was greater than the t table, so Ha was accepted, so that the PhET-assisted anchored instruction learning model had an effect on ability. Physics problem solving for students at SMAN 1 Sukamulia.]]>
