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All Journal CHEMICA Jurnal Teknik Kimia Jurnal Pendidikan dan Pembelajaran Kimia (JPPK) Jurnal Penelitian Pendidikan IPA (JPPIPA) Orbital: Jurnal Pendidikan Kimia Indonesian Journal of Science and Mathematics Education PENDIPA Journal of Science Education Care : Jurnal Ilmiah Ilmu Kesehatan Academy of Education Journal JCER (Journal of Chemistry Education Research) Jurnal Abdi: Media Pengabdian Kepada Masyarakat Sains & Matematika Hydrogen: Jurnal Kependidikan Kimia Jurnal Pijar MIPA Journal of The Indonesian Society of Integrated Chemistry
Rusmini Rusmini
Universitas Negeri Surabaya
Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Education Energy Health Professions Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Nursing Physics Public Health Social Sciences Other

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Acid Base Module with SETS Approach to Train Students’ Critical Thinking Skill Anis Mualifah; Rusmini Rusmini
Jurnal Pendidikan dan Pembelajaran Kimia Vol 10, No 1 (2021): Jurnal Pendidikan dan Pembelajaran Kimia
Publisher : Universitas Lampung

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Abstract

Acid Base Module with SETS Approach to Train Student Critical Thinking Skills. This study aimed to develop an acid-base module with SETS approach to train students' critical thinking skills. The study used Borg Gall Research and Development (RD) method until the limited trial stage. The limited trial was carried out on 12 students of class XI at SMAN 1 Dongko Trenggalek. Then, the developed module was tested for its feasibility based on 3 aspects, namely validity, practicality and effectiveness. The module's validity data was obtained from the results of the assessment from two chemistry lecturers and one chemistry teacher. The module obtained validity percentages of 84.1% for content, 84.17% for presentation and 83.33% for language with a valid category. The module's practicality was obtained from the student response questionnaire results, where the practicality percentage of the module was 98.81% with a very practical category. The module's effectiveness was known from the students’ critical thinking skills improvement based on the pretest and posttest scores and obtained n-gain score average of 0.79 with high category. It is supported by the Wilcoxon test results, which obtained Asymp.Sig 0.05 (0.002 0.05), so that Ha is accepted. So, it can be concluded that the acid-base module with the SETS approach can train students' critical thinking skills
Student Worksheets Based on Science Literacy to Practice Students' Argumentation Skills on Electrolyte and Non-Electrolyte Solution Materials Sisilia Fil Jannati; Rusmini Rusmini
Jurnal Pendidikan dan Pembelajaran Kimia Vol 11, No 1 (2022): Jurnal Pendidikan dan Pembelajaran Kimia
Publisher : Universitas Lampung

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Abstract

Student Worksheets Based on Science Literacy to Practice Students' Arguing Skills on Electrolyte and Non-Electrolyte Solution Subjects. The purpose of this research is to produce student worksheets in training students' argumentation skills on electrolyte and non-electrolyte solution materials that are feasible from the aspect of validity, practicality, and effectiveness. This research uses the 4D research method (Define, Design, Develop, Disseminate), but is limited to the Develop stage. The validity of the student worksheets in terms of content, presentation, language, and graphic aspects obtained very valid criteria with an average percentage of 87.50%: 89.50%; 88.00%; 85.50%. The practicality of the student worksheets is assessed from the student activity observation sheets during learning and student response questionnaires. Relevant student activities obtained very practical criteria with 92.86% at the first meeting and 90.48% at the second meeting. Student response questionnaires got very practical standards with an average percentage in content, presentation, language, and graphics, respectively 97.33%; 96.80%; 93.33%; and 95.83%. The effectiveness of student worksheets to obtain very effective results can be seen from the increase in learning outcomes on cognitive tests and students' argumentation skills tests with n-gain values of 0.79 and 0.85, which have high interpretations. This result is also supported by the results of the Paired Sample T-Test and obtained a Sig value. (2-Tailed) of 0.000 on cognitive tests and tests of argumentation skills. It means there is an influence in the use of student worksheets developed on the results of cognitive tests and students' argumentation skills. Student worksheets based on scientific literacy are very important to train students' argumentation skills. Keywords: student worksheet, scientific literacy, argumentation skills, electrolyte and non-electrolyte solutions DOI: http://dx.doi.org/10.23960/jppk.v11.i1.2022.02
Pengaruh Waktu Kontak Karbon Aktif dari Kulit Durian terhadap Kadar COD, BOD, dan TSS pada Limbah Cair Industri Tahu Lydiana Eka Nabilla; Rusmini Rusmini
CHEMICA: Jurnal Teknik Kimia Vol 6, No 2 (2019): Desember 2019
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/chemica.v6i2.14698

Abstract

The disposal of tofu industrial wastewater into the environment without treatment can cause pollution. The purpose of this study was to utilize durian peel as activated carbon which is used to treat the tofu industrial wastewater through adsorption process. In addition, to determine the effect of variation in contact time on the adsorption process. Carbon from durian peel with chemical activation using KOH 25% containing 10.15% water, 6.14% ash, and iod adsorption of 1194.83 mg/g. Activated carbon from durian peel was tested by FTIR obtained by functional groups of –OH, C−H, and C=C aromatic. Porosity analysis of activated carbon using SAA with BET method obtained surface area of 471.6 m2/g, pore volume of 0.5698 cc/g, and average pore diameter of 24 Å classified as mesoporous. Adsorption process between activated carbon and tofu industrial wastewater variations in contact time during 30, 60, 90, and 120 minutes. Based on the study, the optimum contact time was 90 minutes. At that time, activated carbon from durian peel can reduce COD levels to 57%, BOD to 59%, and TSS to 72% from the initial levels of tofu industrial wastewater.
Development of student worksheets with contextual teaching and learning (CTL) approach to train critical thinking skills responsibility of students on thermochemistry concepts Sitti Kholifah Amartyah; Rusmini Rusmini
Jurnal Pijar Mipa Vol. 17 No. 3 (2022): May 2022
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (345.02 KB) | DOI: 10.29303/jpm.v17i3.3452

Abstract

This study aims to produce and describe the feasibility of student worksheets with a contextual teaching and learning CTL approach in training critical thinking skills and responsibility in thermochemical material. This study uses a research and development type, the ADDIE (Analysis, Design, Development, Implementation, Evaluation). The research sample was 24 students of class XI IPA MA Nurut Taqwa Grujugan Cermee Bondowoso, West Java, Indonesia. The results showed that: 1) Validity analysis obtained an average percentage of 87% with very valid criteria; 2) Practical analysis based on the percentage of response questionnaires and student activity observations of 88% and 98% with very practical criteria; 3) Analysis of effectiveness based on pretest-posttest data: a) Normality test of cognitive knowledge and critical thinking skills 0.985 and 0.297 normally distributed; b) Paired Sample t-Test 0.000 showed an increase in learning outcomes; c) The N-Gain test of cognitive knowledge and critical thinking skills scored 78% and 76% showed an increase in learning outcomes and attitude of respondents obtained a score of 87% with very good criteria. IN conclusion, the developed student worksheet with the CTL approach is categorized as feasible with valid, practical, and effective criteria. The development of student worksheets as teaching material to improve students' critical thinking skills becomes a choice for learning to make learning more meaningful, accompanied by the attitude of students who are full of responsibility, which is an important thing to do.
Pemanfaatan Sabut Siwalan untuk Pembuatan Karbon Aktif sebagai Adsorben Limbah Pewarna Industri Batik Heriono Heriono; Rusmini Rusmini
Sains dan Matematika Vol. 4 No. 1 (2015): Oktober, Sains & Matematika
Publisher : Universitas Negeri Surabaya

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Abstract

Penelitian ini bertujuan untuk menganalisis karakteristik karbon aktif sabut siwalan sebagai adsorben, pengaruh massa dan waktu interaksi terhadap kemampuan adsorpsi rhodamin B. Variasi massa karbon aktif sabut siwalan terhadap adsorpsi rhodamin B pada berbagai variasi massa yaitu 0,1; 0,2; 0,3; 0,4; dan 0,5 gram dengan lama waktu interaksi 90 menit dan berbagai variasi waktu yaitu 30, 60, 90, 120, dan 150 menit dengan massa adsorben 0,3 gram. Penelitian dilakukan pada dua tahap. Tahap pertama pembuatan karbon aktif dari sabut siwalan. Hasil penelitian tahap pertama menunjukkan bahwa kandungan air dan abu pada karbon aktif sabut siwalam secara berturut-turut adalah 3,0622% dan 9,1429%. Hasil surface area analyzer menunjukkan luas permukaan dan rerata jari-jari pori berturut-turut sebesar 3,160 m2/g dan 3,199Ã…. Penelitian tahap kedua menguji aktivitas karbon aktif dari sabut siwalan dengan rhodamin B pada variasi massa dan waktu interaksi menunjukkan variasi massa berpengaruh terhadap kemampuan adsorpsi rhodamin B, waktu kontak optimum pada massa 0,3 gram dengan hasil rhodamin B teradsorp 67,59%. Selain itu, variasi waktu juga berpengaruh pada kemampuan mengadsorpsi rhodamin B, waktu kontak optimum pada waktu 90 menit dengan hasil rhodamin B teradsorp 58,95%. This study aimed to analyze the characteristic of activated carbon made from siwalan (palmyra palm) fi ber as adsorbent, the effect of the addition of various mass of siwalan fi ber and interaction time to the adsorption ability of rhodamine B. The various mass of siwalan fi ber used were 0.1; 0.2; 0.3; 0.4; and 0.5 grams with interaction time 90 minutes. In addition, various of interaction time were used, namely 30, 60, 90, 120 and 150 minutes with mass of adsorbent 0,3 grams. The study was conducted in two stages. The fi rst stage was making activated carbon from siwalan fi ber. The fi rst phase result showed that the content of water and ash in the activated carbon from siwalan fi ber were 3.0622% and 9.1429% respectively. The results of surface area analyzer showed that surface area and average pore radius were 3.160 m2/g and 3.199Ã… respectively. The second phase testing the activity of activated carbon from siwalan fi ber with rhodamine B in the variation of mass and interaction time result showed a mass 0.3 grams with the result of adsorbent rhodamine B was 67.59%. In addition, the time variation also affected the ability to adsorb rhodamine B. The optimum contact time of 90 minutes with result of adsorbent rhodamine B was 58,95%.
PENGARUH PEMBERIAN NANOGOLD-NANOSILVER UNTUK PENINGKATAN IMUN MASYARAKAT TERDAMPAK COVID-19 KLUSTER SIDOARJO Savira Ayu Ningtias; Rusmini Rusmini; Titik Taufikurohmah
Care : Jurnal Ilmiah Ilmu Kesehatan Vol 9, No 3 (2021)
Publisher : Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/jc.v9i3.2262

Abstract

ABSTRACTSome countries including Indonesia are currently affected by Covid-19 Pandemic. It absolutely causes a health crisis that generally attacks the body's immune system. Efforts are needed not to be affected by coronavirus, one of which can be conducted by providing health water with nanogold-nanosilver with a concentration of 20 ppm in which nanogold plays a role in strengthening the body's immune system at the cellular level while nanosilver acts as a catalyst for the body's immune system to prevent and kill pathogens. This research aimed to determine the effect of giving nanogold-nanosilver on increasing body immunity in healing complaints of serious illness and minor illness in the 230 people affected by the Covid-19 Sidoarjo cluster. The method used in this research was descriptive quantitative by distributing 150 mL of nanogold-nanosilver in a drinking water mixture to the Sidoarjo cluster people for 10 days in April. Data were obtained from the results of interviews every three times a day, the respondent's response had a significant effect by giving nanogold-nanosilver. It could boost body immunity as evidenced by improving body fitness, healing minor ailments (coughs, colds, menstruation, stomach acid, and acne and spots on the face) ) to recover serious diseases (kidney stones and breast pain). Furthermore, data would be processed in the form of bar chart. Thus, nanogold-nanosilver is able to maintain healthy conditions for people during a pandemic. Therefore, nanogold-nanosilver is expected to be a medicine of the future. Keywords: Body immunity; Nanogold; Nansosilver. ABSTRAKSaat ini berbagai negara khususnya Indonesia telah tedampak pandemi Covid-19, tentunya mengakibatkan krisis kesehatan yang pada umumnya menyerang sistem imun tubuh. Perlu adanya upaya agar tidak terserang coronavirus, salah satunya bisa dilakukan dengan pemberian air kesehatan nanogold-nanosilver dengan konsentrasi 20 ppm dimana nanogold berperan memperkuat sistem imun tubuh tingkat sel sedangkan nanosilverberperan sebagai katalisator sistem imun tubuh untuk mencegah serta membunuh patogen. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian nanogold-nanosilver terhadap peningkatan imunitas tubuh dalam penyembuhan keluhan sakit berat maupun sakit ringan terhadap 230 masyarakat terdampak Covid-19 kluster Sidoarjo. Metode yang digunakan dalam penelitian ini yaitu kuantitatif deskriptif dengan membagikan 150 mL nanogold-nanosilver dalam campuran air minum kepada masyarakat kluster Sidoarjo selama 10 hari dalam bulan April. Data diperoleh dari hasil wawancara setiap tiga kali minum, respon responden memberikan pengaruh yang signifikan dengan pemberian nanogold-nanosilver dapat meningkatkan imun tubuh dibuktikan dengan meningkatkan kebugaran tubuh, penyembuhan penyakit ringan (batuk, pilek, menstruasi, asam lambung, serta jerawat dan flek di wajah) hingga memulihkan penyakit berat (batu ginjal dan nyeri payudara). Selanjutnya data akan diolah dalam bentuk diagram batang. Dengan demikian, nanogold-nanosilver mampu mempertahankan kondisi masyarakat tetap sehat di masa pandemi. Sehingga nanogold-nanosilver diharapkan bisa menjadi obat masa depan. Kata kunci: Imun tubuh; Nanogold; Nanosilver
PEMBELAJARAN ECIRR DALAM MEREDUKSI MISKONSEPSI PADA MATERI STOIKIOMETRI KELAS X SMA Crislia A Wulandari; Rusmini Rusmini
Orbital: Jurnal Pendidikan Kimia Vol 4 No 1 (2020): Orbital: Jurnal Pendidikan Kimia
Publisher : Chemistry Education Department of Education and Teaching Faculty

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19109/ojpk.v4i1.5487

Abstract

The students already have preconceptions in learning chemical concepts. However, each student's preconception can differ from the actual concept according to the chemists. This is what allows the wrong concept in students or commonly called misconceptions. In this case, if the misconception is not immediately solved it will affect the next learning process. One learning model to reduce misconceptions is ECIRR. This study aims to determine the effectiveness of LKPD which develope in reducing misconceptions in term the shifting students conception of students from misconception to knowing concept. This research uses pre-experiment research method with One group Pretest – Posttest Design model. There are 15 students of class x science from a senior high school in surabaya who are selected based on the results of the students' initial understanding test. The understanding test used is a three-tier test to identify students concepts given as initial concept detection and final concept detection, while students' misconceptions are reduced with the ECIRR learning model. The results of the study obtained a percentage shift from misconception to know concept of 92.31% for the sub concepts of basic chemical law (Gay-lussac), 88.24% for the sub concepts of molar mass and relative molecular mass, 72% for the subconcepts of the number of particles, and 88% for empirical formula sub concepts. So it can be shown that LKPD is very effectively used to reduce students' misconceptions on stoichiometry material.
PENGGUNAAN MODEL CONCEPTUAL CHANGE PADA INSTRUMEN THREE-TIER-TEST DAN LKPD Dwi Anggraeni Riswana; Rusmini Rusmini
Orbital: Jurnal Pendidikan Kimia Vol 4 No 2 (2020): Orbital: Jurnal Pendidikan Kimia
Publisher : Chemistry Education Department of Education and Teaching Faculty

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19109/ojpk.v4i2.6450

Abstract

There are still many misconceptions in the buffer solution material based on the results of pre-research that has been done. Therefore, it is necessary to to make efforts to reduce misconceptions. This research aims to determine the validity of the three-tier-test diagnostic test instrument and Student Worksheet (LKPD) to reduce student’s misconceptions through conceptual change model on buffer material. This research and development method uses a 3-D model which is a modification of the 4-D model, namely (1) define; (2) design; and (3) development. The validity of the instrument and LKPD in terms of content validity and construct validity. The content validity of the instruments and LKPD respectively obtained an average percentage of 94.00% and 92.44%. While the construct validity of the instruments and LKPD respectively obtained an average percentage of 91.00% and 86.47%. This results shows that the three-tier-test diagnostic test instrument and LKPD through conceptual change model developed were declared very valid.
Hydrocarbon and Petroleum with SETS Approach Module to Train Students’ Critical Thinking Skills Dinda Karunia Putri; Rusmini Rusmini
Indonesian Journal of Science and Mathematics Education Vol 4, No 1 (2021): Indonesian Journal of Science and Mathematics Education
Publisher : Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (682.295 KB) | DOI: 10.24042/ijsme.v4i1.7839

Abstract

The aim of this study was to develop a module with the Science, Environment, Technology and Society (SETS) approach to train critical thinking skills on hydrocarbons and petroleum using the Research and Development (R and D) method. This development modul was validated by 3 experts, while the limited trial was only limited to a small trial with 3 respondents from class XII students of SMAN 10 Surabaya to obtain practical and effective data of modules that developed on a small scale. This experiment obtained expert validation results 87% with the “very valid” category, module practicality 94% with the “very practical” category and module effectiveness of 0.8 with the “high” category. The effectiveness of the module is obtained from the pretest and posttest that 3 students have increased their critical thinking skills after the module is given. Based on this study, it can be concluded that the module with the SETS approach in the material of hydrocarbons and petroleum can train students’ critical thinking skills and it is feasible to be tested on larger respondents.
IMPLEMENTATION OF TPS LEARNING MODELS WITH PROBLEM POSING TO TRAIN CREATIVE THINKING ON ACID-BASE Wisma Imelda Setyowati; Rusmini Rusmini
Academy of Education Journal Vol 11 No 2 (2020): Academy of Education Journal
Publisher : Fakultas Keguruan dan Ilmu Pendidikan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (256.849 KB) | DOI: 10.47200/aoej.v11i2.394

Abstract

The research aims to be aware of the implementation of the TPS learning model with problem posing strategies on acid-base, student activity, creative thinking skills, completeness of learning outcomes, and responses of the learning model used. Use one group pretest-posttest research design and was applied to 54 high school students in class XI. The average percentage obtained by the feasibility of the learning model to 91.67% at the first meeting and to 98.60% at second meeting which both of them fall into the excellent category. The relevant activities result at the first meeting to 94,69% and irrelevant by 5,31% while activities of relevant at second meeting to 93,09% and irrelevant by 6,91%,, creative thinking skills increased by a percentage of 40.74% for the high category, 44.44% medium category, and 14.82% low category, for classical completeness learning outcomes by 88.89 %, and students' responses were 95.60% positive while 4.40% for negative responses.
Co-Authors Anis Mualifah Anita Anggrahini Annisa Putria Dewitasari ARDITH WULANDARI, CRISLIA Bertha Yonata Crislia A Wulandari Dian Novita Dinda Karunia Putri Dwi Anggraeni Riswana Eka Haslinda Fatmawati Galuh Isna Permata Heriono Heriono Iktifaul Ulya Lydiana Eka Nabilla Millaturosita Zeni Hidayana Mirwa Adhiprahara Mustaji Mustaji Nita Kusumawati Nuniek Herdyastuti Prima Retno Wikandari Sari Edi Cahyaningrum Savira Ayu Ningtias Sisilia Fil Jannati Sitti Kholifah Amartyah Sri Poedjiastoeti Titik Taufikurohmah Titik Taufikurrohmah Wisma Imelda Setyowati