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Journal articles on the topic 'Chemistry and experimental classes'

Author: Grafiati

Published: 4 June 2021

Last updated: 12 February 2022

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1

PAHRIAH, PAHRIAH. "Pengaruh Pendekatan Inkuiri Terbimbing dipadu dengan Diagram Alir terhadap Prestasi Belajar Siswa SMA." Prisma Sains : Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram 3, no. 2 (2015): 59. http://dx.doi.org/10.33394/j-ps.v3i2.973.

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This study aims to compare student achievement in teaching chemical equilibrium topics using a guided inquiry approach combined with and without flow charts. This research is a quasi-experimental study with a pretest-posttest control group design. The study sample consisted of 31 experimental class students and 24 control class students. The instruments in this study consisted of two types, namely (1) the instrument of treatment in the form of learning devices using a guided inquiry approach combined with flow diagrams in the experimental class students and guided inquiry learning in control c

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Dias, Júlia Scaff Moreira, Felipe Terra Martins, João Honorato de Araújo Neto, et al. "Novel ruthenium(iii) complexes with hydroxybenzophenones: experimental and theoretical characterization and in vitro leishmanicidal activity comparing complexes and ligands." New Journal of Chemistry 45, no. 17 (2021): 7501–15. http://dx.doi.org/10.1039/d0nj06159j.

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Nurdillayeva, R. N., and G. O. Zhuman. "Application of the CLIL method in the classes of Inorganic Chemistry." Bulletin of the Karaganda University. "Chemistry" series 102, no. 2 (2021): 96–104. http://dx.doi.org/10.31489/2021ch2/96-104.

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The article considers the features of applying the CLIL method to integrated teaching of Inorganic Chemistry in English. Todevelop students' subject and language skills the content and language integrated learning (CLIL)method was studied in the format of online learning. Inorganic chemistry classesfor first-year students of B012 Chemistry Teacher Training Program group were conducted in online format for the control group, and for the experimental group using CLIL method. Students were selected not randomly, according to English and subject level for experimental work based on entrance contro

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Zadorozhna, Оlena. "INTEGRATED CLASSES AS A MEANS OF FORMING STUDENTS’ MOTIVES FOR STUDYING CHEMISTRY." Problems of Modern Teacher Training, no. 1(23) (April 29, 2021): 72–85. http://dx.doi.org/10.31499/2307-4914.1(23).2021.232769.

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The article considers, substantiates, and experimentally tests the method of integrative classes as a means of forming students’ motives for studying chemistry, necessary to ensure the quality of chemical education. It highlights the relationship of interdisciplinary components, the integration of methods, tools, and forms, the integrity of the main and variable parts of the content of educational material in the study of chemistry. The article also substantiates the use of a set of methods: analysis of historical, psychological, pedagogical, methodical literature, synthesis, comparison, class

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Vogelzang, Johannes, Wilfried F. Admiraal, and Jan H. van Driel. "Effects of Scrum methodology on students’ critical scientific literacy: the case of Green Chemistry." Chemistry Education Research and Practice 21, no. 3 (2020): 940–52. http://dx.doi.org/10.1039/d0rp00066c.

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Secondary science education plays a key role in students’ process to become scientifically literate citizens. However, teaching students to acquire the necessary skills and knowledge to deal with complex societal issues is challenging. This paper reports about a study in which Scrum – a methodology to manage complex projects – was implemented in secondary chemistry classrooms to increase students’ conceptual understanding as well as their critical scientific literacy. A quasi-experimental design was used with 198 Grade 11 students from eight different classes. The experimental condition (99 st

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Mandina, Shadreck, and Eshiwet Dube. "Implementing a Target-Task Problem-Solving Model in teaching Electrochemistry to Advanced level chemistry learners." Cypriot Journal of Educational Sciences 13, no. 4 (2018): 451–60. http://dx.doi.org/10.18844/cjes.v13i4.2710.

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The study investigated the effect of a Target-Task Approach on the performance of advanced level chemistry students in electrochemistry. The study adopted the quasi-experimental research design. Data were obtained from two advanced level chemistry classes from two high schools in Gweru, Zimbabwe. One of the two classes was assigned to be the experimental group, while the other class acted as the control group. The experimental group was taught electrochemistry using Target-Task Approach, while the conventional method was used to teach the control group. Analysis of covariance was used to analy

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Herga, Nataša, and Dejan Dinevski. "Virtual Laboratory in Chemistry - Experimental Study of Understanding, Reproduction and Application of Acquired Knowledge of Subject's Chemical Content." Organizacija 45, no. 3 (2012): 108–16. http://dx.doi.org/10.2478/v10051-012-0011-7.

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Virtual Laboratory in Chemistry - Experimental Study of Understanding, Reproduction and Application of Acquired Knowledge of Subject's Chemical ContentTraditional teaching does not often allow very active involvement of pupils in class. In chemistry and natural sciences in general experimental and laboratory work is one of the most effective methods for acquiring knowledge. Experimental work can also be exercised using virtual world. Virtual laboratory offers some important advantages. Understanding chemistry involves the ability of cognitive comprehension on three levels: the macroscopic leve

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Karpudewan, Mageswary, Wolff Michael Roth, and Devananthini Sinniah. "The role of green chemistry activities in fostering secondary school students' understanding of acid–base concepts and argumentation skills." Chemistry Education Research and Practice 17, no. 4 (2016): 893–901. http://dx.doi.org/10.1039/c6rp00079g.

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In a world where environmental degradation is taking on alarming levels, understanding, and acting to minimize, the individual environmental impact is an important goal for many science educators. In this study, a green chemistry curriculum—combining chemistry experiments with everyday, environmentally friendly substances with a student-centered approach that includes student–student discussion—was tested for its potential to increase the understanding of acid–base concepts and argumentative skills. A quasi-experimental design was chosen intended to take into account teacher/school nested effe

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LIMA, Alexsandra Rodrigues, Flávia Cristiane Vieira da SILVA, and José Euzebio SIMÕES NETO. "EXPERIMENTAL ACTIVITIES AND TEACHING BY INVESTIGATION: PROPOSED CONTINUED FORMATION OF CHEMISTRY TEACHERS." Periódico Tchê Química 16, no. 31 (2019): 164–74. http://dx.doi.org/10.52571/ptq.v16.n31.2019.170_periodico31_pgs_164_174.pdf.

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The use of experiments is an important didactic strategy for the chemistry teaching, for motivation and learning of scientific contents, especially when designed in accordance with research teaching, in order to encourage questioning, planning and explanations based on evidence, actions essential for understanding the contents of chemistry. The present work had the objective of evaluating the potential of a continued formation of for chemistry teacher’s workshop, as well as analyzing the impressions of these teachers on experimental work through teaching by investigation. For this, it was cond

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Tarkin, Aysegul, and Esen Uzuntiryaki-Kondakci. "Implementation of case-based instruction on electrochemistry at the 11th grade level." Chemistry Education Research and Practice 18, no. 4 (2017): 659–81. http://dx.doi.org/10.1039/c7rp00062f.

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This study aims to compare the effectiveness of case-based instruction over traditional instruction in improving 11th grade students' understanding of electrochemistry concepts, attitudes toward chemistry, chemistry self-efficacy beliefs, and motivation to learn chemistry. In total, 113 students (47 males and 66 females) from three high schools participated in this study. Two of the classes from each school were randomly assigned to be either the experimental or control group. The experimental group was instructed by case-based instruction while the control group was taught by traditionally de

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Raven, E. Lloyd, A. Celik, P. M. Cullis, R. Sangar, and M. J. Sutcliffe. "Engineering the active site of ascorbate peroxidase." Biochemical Society Transactions 29, no. 2 (2001): 105–11. http://dx.doi.org/10.1042/bst0290105.

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Understanding the catalytic versatility of haem enzymes, and in particular the relationships that exist between different classes of haem-containing proteins and the mechanisms by which the apo-protein structure controls chemical reactivity, presents a major experimental and theoretical challenge. These issues are discussed in the general context of peroxidase and cytochrome P450 chemistry, and specific issues relating to the catalytic chemistry of ascorbate peroxidase are highlighted.

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Zhou, Hong Li, Lin Chao Yu, Jian Zhang, Guo Liang Zhao, and Sai Lian Qiu. "Study on the Chemical Integrated and Designing Experiment Course of Undergraduate." Advanced Materials Research 634-638 (January 2013): 3914–17. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.3914.

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According to the current situation of integrated and designing experiments in our college, experiments involving the extract, identification and determination of polysaccharides and flavonoids in corn silk were set as integrated training course for undergraduates. On the purpose of enhancing comprehensive experimental skills of the students, integrating the theories they learned in classes with practice, making students comprehending relevant knowledge of organic chemistry, analytical chemistry, natural pharmaceutical chemistry and pharmaceutical analysis, the sense of scientific innovation an

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Da Silva, Geilson Rodrigues, Talina Meirely Nery Dos Santos, Griscele Souza De Jesus, and Lucas Pereira Gandra. "Experimentação na educação química: elaboração de sinais em libras para práticas de laboratório." Revista Brasileira de Educação em Ciências e Educação Matemática 2, no. 1 (2018): 41. http://dx.doi.org/10.33238/rebecem.2018.v.2.n.1.18994.

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Resumo: A Química é uma Ciência com poucos sinais específicos em Língua Brasileira de Sinais para o ensino de pessoas com surdez. Essa barreira de linguagem pode ocasionar obstáculos de aprendizagem aos estudantes surdos. Sendo assim, a presente pesquisa teve como objetivos catalogar verbetes e criar sinais para a utilização em aulas práticas de Química. Para coleta de dados foram levantados os termos na literatura no dicionário ilustrado trilíngue que possuíssem relações com a disciplina de Química, ao qual foram categorizados a partir da Análise de Conteúdo, em função do seu emprego e utiliz

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Vinko, Luka, Seamus Delaney, and Iztok Devetak. "Teachers’ Opinions about the Effect of Chemistry Demonstrations on Students’ Interest and Chemistry Knowledge." Center for Educational Policy Studies Journal 10, no. 2 (2020): 9–25. http://dx.doi.org/10.26529/cepsj.893.

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Chemistry is an experimental discipline that uses experimentation as one of its most important research methods. Laboratory work and other practical work are therefore also essential in chemistry lessons. Chemistry demonstrations are used by teachers as an educational approach that can increase students’ interest in chemistry and motivate them to learn chemical concepts with understanding. However, if the students are actively involved in the chemistry demonstration, it can be just as effective as or even more effective than students’ learning through experiments. The purpose of this research

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Hrin, Tamara, Dusica Milenkovic, Mirjana Segedinac, and Sasa Horvat. "Enhancement and assessment of students’ systems thinking skills by application of systemic synthesis questions in the organic chemistry course." Journal of the Serbian Chemical Society 81, no. 12 (2016): 1455–71. http://dx.doi.org/10.2298/jsc160811097h.

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Many studies in the field of science education have emphasized the fact that systems thinking is a very important higher-order thinking skill which should be fostered during classes. However, more attention has been dedicated to the different ways of systems thinking skills assessment, and less to their enhancement. Taking this into consideration, the goal of our study was not only to validate secondary school students? systems thinking skills, but also to help students in the complex process of their development. With this goal, new instructional and assessment tools - systemic synthesis ques

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Niklanovic, Mirjana, Tomka Miljanovic, and Tijana Pribicevic. "A model of interdisciplinary teaching of ecology in the high school." Archives of Biological Sciences 66, no. 3 (2014): 1291–97. http://dx.doi.org/10.2298/abs1403291n.

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In this paper, we present the results of pedagogical studies of biology lectures in a high school. The subject Ecology is realized in the second year of high school during 14 classes employing an interdisciplinary approach (correlation of terms from Biology, Geography, Chemistry, Physics and Mathematics) in an experimental (E) group and compared to traditional classes in a control (C) group. Students from the E group achieved significantly better success in the final test (70.60 points average) and retest (57.60 points average) than students from the C group (51.80 points at final test and 40.

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Kartika, Yuni, Eko Swistoro, and M. Lutfi Firdaus. "Application of Jigsaw Cooperative Learning Model on Spectroscopy Subject." Bencoolen Journal of Science Education and Technology 1, no. 1 (2020): 1–5. http://dx.doi.org/10.33369/bjset.v1i1.11175.

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The goal of this study was to describe the differences in students learning outcome, between those who use the jigsaw learning model with those who study conventionally in analytical chemistry learning. This research used quasi-experimental method with a non-equivalent design and control grup design. The research conducted at chemistry study program fifth semester. In the non-equivalent control group design, the sample was not chosen randomly but by purposive sampling technique. The sample was chosen by purposive sampling technique. The research used two classes, i.e. class A as the experiment

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Gebrehiwot, Hadush. "Evaluation and intervention of students’ laboratory performance in chemistry graduating classes; Wachemo University, Ethiopia." International Journal of Scientific Reports 3, no. 7 (2017): 203. http://dx.doi.org/10.18203/issn.2454-2156.intjscirep20173092.

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<p class="abstract"><strong>Background:</strong> The laboratory courses offer students the opportunity to gain manipulative skills, observational skills, and the ability to plan experiments and to interpret experimental data. The laboratory can be an excellent environment for active learning. It has long been considered useful to develop conceptual understanding, but some recent courses have been developed that rely heavily on laboratory experience, in contrast to conventional teaching methods, for the development of conceptual understanding of sciences. The primary purpose o

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Dewi Puspitaningrum, Nimas Putri, and Widinda Normalia Arlianty. "Learning Chemistry using Course Review Horay (CRH) Model Toward Students Learning Activity X Grade In SMA Negeri 1 Muntilan In Nomenclature Name Of Chemical Compounds Materials." International Journal of Chemistry Education Research 3, no. 1 (2019): 43–48. http://dx.doi.org/10.20885/ijcer.vol3.iss1.art7.

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The purpose of this study was to determine the difference of implementation the Course Review Horay (CRH) model on learning activities of students grade X SMA Negeri 1 Muntilan, academic year 2017/2018 in nomenclature of chemical compounds material. This research is an experimental research. Population of this study was all class X students of SMA Negeri 1 Muntilan on 2017/2018 school year, with a total of 7 classes. Samples were taken by purposive sampling technique consist of 2 classes. Data collection techniques used non-test methods. Form of assessment used are observation sheets. Data ana

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Schneider, Daniel, Dirk Mehlhorn, Philipp Zeigermann, Jörg Kärger, and Rustem Valiullin. "Transport properties of hierarchical micro–mesoporous materials." Chemical Society Reviews 45, no. 12 (2016): 3439–67. http://dx.doi.org/10.1039/c5cs00715a.

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This work provides an overview of different experimental techniques of diffusion measurements in porous materials and discusses transport properties of several classes of hierarchically organized micro-mesoporous materials.

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Sitnikova, Anastasia, Olga Simonova, and Mrityunjoy Kar. "Developing Chemistry Students’ Study Skills through Integration of Visual Organizers in Teaching ESP." Journal of Language and Education 2, no. 1 (2016): 22–29. http://dx.doi.org/10.17323/2411-7390-2016-2-1-22-29.

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This study is aimed at development chemistry students’ study skills through integration of visual organizers (VOs) in teaching English for Special Purposes (ESP). The research specifically examined the students’ attitude toward the chemistry content of English classes and the achievement of two groups of 54 students under study. The results of the study indicated that there is a significant difference between the level of study skills in dealing with chemistry in English of the students in the experimental group before and after the experiment. The result of students’ perception about visual o

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Feldmann, Christian, Filip Miljković, Dimitar Yonchev, and Jürgen Bajorath. "Identifying Promiscuous Compounds with Activity against Different Target Classes." Molecules 24, no. 22 (2019): 4185. http://dx.doi.org/10.3390/molecules24224185.

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Compounds with multitarget activity are of high interest for polypharmacological drug discovery. Such promiscuous compounds might be active against closely related target proteins from the same family or against distantly related or unrelated targets. Compounds with activity against distinct targets are not only of interest for polypharmacology but also to better understand how small molecules might form specific interactions in different binding site environments. We have aimed to identify compounds with activity against drug targets from different classes. To these ends, a systematic analysi

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Szalay, L., Z. Tóth, and E. Kiss. "Introducing students to experimental design skills." Chemistry Education Research and Practice 21, no. 1 (2020): 331–56. http://dx.doi.org/10.1039/c9rp00234k.

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The results of an earlier empirical research study on modifying ‘step-by-step’ instructions to practical activities requiring one or more steps of the experiments to be designed by students initiated a longitudinal study to investigate the effectiveness of the approach for younger students and over a period of time. The longitudinal study that followed took the form of a four year research project that began in September 2016. Over 900 students have been involved. All were 12–13 years old in the beginning of the study. Each year they spend six lessons carrying out practical activities using wo

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Cleary, Sean P., and James S. Prell. "Distinct classes of multi-subunit heterogeneity: analysis using Fourier Transform methods and native mass spectrometry." Analyst 145, no. 13 (2020): 4688–97. http://dx.doi.org/10.1039/d0an00726a.

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A classification scheme for heterogeneous multi-subunit assemblies is presented along with theory and experimental demonstration of their characterization using mass spectrometry and Fourier-Transform analysis methods.

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Bierbaum, V. M. "Laboratory Studies of Ion Chemistry in the Interstellar Medium." Proceedings of the International Astronomical Union 9, S297 (2013): 258–64. http://dx.doi.org/10.1017/s1743921313015962.

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AbstractStudies of gas phase ion-neutral reactions provide insight into many areas of astrochemistry, including the elusive characterization of the Diffuse Interstellar Bands (DIBs). This presentation gives an overview of our experimental studies of several classes of positive and negative ions, using the flowing afterglow-selected ion flow tube and a newly modified ion trap. Earlier studies of carbon chain anions and polycyclic aromatic hydrocarbon (PAH) cations, both of which have been suggested as carriers of the DIBs, are described. More recent work including isomeric PAHs, nitrogen-contai

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SILVA, Cleydivan Cunha, José Ailton Costa DA SILVA, Maurício Bezerra COSTA, and Rusbene Bruno Fonseca DE CARVALHO. ""LAVA-LUZ" LUMINAIRE: A PEDAGOGICAL PROPOSAL FOR SCIENCE TEACHING." Periódico Tchê Química 12, no. 23 (2015): 22–27. http://dx.doi.org/10.52571/ptq.v12.n23.2015.22_p_23_pgs_22_27.pdf.

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Teaching and learning of sciences are huge challenges that require means such as didactic resources, audiovisual, expositive classes, field classes and so forth. To improve science classes in elementary school, it is necessary that teachers receive better working conditions and so can engage in dynamic classes that provide facilitate student understanding, leading him to interact as a means. In this context, our study aimed to evaluate and observe participation, stimulus and acquired knowledge by students through a new pedagogical proposal, enabling the discussion of how the teaching of scienc

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Hasanah, Siti, Agus Abhi Purwoko, and Aliefman Hakim. "The Effect of Guided Inquiry Learning Model on Chemistry Learning Outcomes." Journal of Science and Science Education 1, no. 1 (2020): 15. http://dx.doi.org/10.29303/jossed.v1i1.446.

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Teachers and students still dominate the learning process at SMAN 1 Lingsar are even less active. This study aimed to determine the effect of the Guided Inquiry learning model on students' chemistry learning outcomes. This study used quasi-experimental research (quasi-experimental) with a nonequivalent control group design pre-test-post-test design. The population in this study were all Class XI IPA SMAN 1 Lingsar. The sampling technique used a quota sampling technique. The sample consisted of 2 classes, namely class XI MIA 1 as the experimental class and class XI MIA 4 as the control class. T

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Dai, Nguyen Van, Vu Quoc Trung, Chu Van Tiem, Kieu Phuong Hao, and Dao Thi Viet Anh. "Project-Based Teaching in Organic Chemistry through Blended Learning Model to Develop Self-Study Capacity of High School Students in Vietnam." Education Sciences 11, no. 7 (2021): 346. http://dx.doi.org/10.3390/educsci11070346.

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Developing students’ self-study capacity is an urgent task of high schools in the current educational renovation period in Vietnam. This article presents research findings on developing self-study capacity for students through building and organizing teaching activities of 11th-grade organic chemistry project topics according to the blended learning model. The pedagogical experiment was conducted at three high schools in the north, central, and south regions of Vietnam with 125 students. The data obtained from the teacher’s assessment and the students’ self-assessment showed obvious developmen

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Yalçınkaya, Eylem, and Yezdan Boz. "The effect of case-based instruction on 10th grade students' understanding of gas concepts." Chemistry Education Research and Practice 16, no. 1 (2015): 104–20. http://dx.doi.org/10.1039/c4rp00156g.

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The main purpose of the present study was to investigate the effect of case-based instruction on remedying 10th grade students' alternative conceptions related to gas concepts. 128 tenth grade students from two high schools participated in this study. In each school, one of the classes was randomly assigned as the experimental group and the other class, instructed by the same chemistry teacher, was assigned as the control group. The students in the experimental groups were instructed by case-based instruction based on conceptual change conditions while the control group students received tradi

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Popovska, Olga. "Implementing and Operating Computer Graphics in the Contemporary Chemistry Education." Mediterranean Journal of Chemistry 6, no. 6 (2017): 215–22. http://dx.doi.org/10.13171/mjc65/01711241030-popovska.

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Technology plays a crucial role in modern teaching, providing both, educators and students fundamental theoretical insights as well as supporting the interpretation of experimental data. In the long term it gives students a clear stake in their learning processes. Advancing in education furthermore largely depends on providing valuable experiences and tools throughout digital and computer literacy. Here and after, the computer’s benefit makes no exception in the chemistry as a science. The major part of computer revolutionizing in the chemistry laboratory is with the use of images, diagrams, m

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Rutter, E. H., and K. H. Brodie. "Experimental approaches to the study of deformation/metamorphism relationships." Mineralogical Magazine 52, no. 364 (1988): 35–42. http://dx.doi.org/10.1180/minmag.1988.052.364.03.

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AbstractRock deformation and metamorphism can interact at the mechanistic level in the following ways: (a) facilitation of cataclasis through the release of high-pressure fluid during dehydration and decarbonation reactions; (b) facilitation of intracrystalline plasticity through the stresses induced during solid-state volume changes; (c) enhanced deformability through the transient existence of fine-grained reaction products; (d) modification of chemical potential gradients driving diffusion if a reaction can occur along the diffusion path; (f) changes in the resistance to intracrystalline pl

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Pekdağ, Bülent. "Video-based instruction on safety rules in the chemistry laboratory: its effect on student achievement." Chemistry Education Research and Practice 21, no. 3 (2020): 953–68. http://dx.doi.org/10.1039/d0rp00088d.

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This study explores the effect of video-based instruction on the safety rules in the chemistry laboratory on student achievement. The sample for the study comprised 61 ninth grade students enrolled in two different classes at a public high school. The students in the class designated as the experimental group (N = 32) were given video-based instruction on the safety rules required to be applied in the chemistry laboratory, while the other class that was designated as the control group (N = 29) was taught the same topic, but with traditional instruction. The experimental and control groups were

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Pushkarova, Yaroslava, and Yuriy Kholin. "A procedure for meaningful unsupervised clustering and its application for solvent classification." Open Chemistry 12, no. 5 (2014): 594–603. http://dx.doi.org/10.2478/s11532-014-0514-6.

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AbstractArtificial neural networks have proven to be a powerful tool for solving classification problems. Some difficulties still need to be overcome for their successful application to chemical data. The use of supervised neural networks implies the initial distribution of patterns between the pre-determined classes, while attribution of objects to the classes may be uncertain. Unsupervised neural networks are free from this problem, but do not always reveal the real structure of data. Classification algorithms which do not require a priori information about the distribution of patterns betwe

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Veale, Clinton G. L., Vineet Jeena, and Siphamandla Sithebe. "Prioritizing the Development of Experimental Skills and Scientific Reasoning: A Model for Authentic Evaluation of Laboratory Performance in Large Organic Chemistry Classes." Journal of Chemical Education 97, no. 3 (2020): 675–80. http://dx.doi.org/10.1021/acs.jchemed.9b00703.

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Ionescu, Ioana Alexandra, Viorel Patroescu, Mihai Stefanescu, Vasile Iancu, Florentina Laura Chiriac, and Constantin Damian. "Influence of Excess Biological Sludge Disintegration Processes on Pharmaceutical Compounds, Hormones and PAH Concentrations from Anaerobic Stabilized Sludge." Revista de Chimie 71, no. 6 (2020): 346–54. http://dx.doi.org/10.37358/rc.20.6.8201.

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This paper shows the influence of certain biological sludge disintegration processes over the concentrations of emerging pollutants, including classes of structurally different compounds such as pharmaceuticals, hormones and polycyclic aromatic hydrocarbons from anaerobic stabilized sludge. Three processes for sludge disintegration were tested: ultrasonic, ultrasonic + electrokinetic and ultrasonic + electrokinetic + microbubble generation. Activated sludge from an urban wastewater treatment plant was used in the experiments. Both pharmaceuticals from the analgesic and antipyretic classes, as

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Riyanto, Riyanto, and Beta Wulan Febriana. "Alternative of Visual Based Learning (VBL) Method Based on Short Duration Video for The Instrumental Chemistry Subject in Chemistry Department." International Journal of Chemistry Education Research 1, no. 1 (2017): 46–53. http://dx.doi.org/10.20885/ijcer.v1i1.10087.

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ABSTRACT:There had been done a study of Visual Based Learning (VBL) method based on Short Duration Video for Instrumental Chemicals Subject in Chemistry Study Program of Mathematics and Natural Sciences Faculty (MNSF), Islamic University of Indonesia (Universitas Islam Indonesia—UII). VBL method is carried out by creating a short duration video about an instrument according to the syllabus of instrument 1 subject such as AAS, UV-Vis Spectrophotometer, FTIR, GC-MS, and CV. In order to determine the effect of VBL method using, an analysis of scores obtained between the experimental class and the

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Riyanto, Riyanto, and Beta Wulan Febriana. "Alternative of Visual Based Learning (VBL) Method Based on Short Duration Video for The Instrumental Chemistry Subject in Chemistry Department." International Journal of Chemistry Education Research 1, no. 1 (2017): 46–53. http://dx.doi.org/10.20885/ijcer.vol1.iss1.art7.

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ABSTRACT:There had been done a study of Visual Based Learning (VBL) method based on Short Duration Video for Instrumental Chemicals Subject in Chemistry Study Program of Mathematics and Natural Sciences Faculty (MNSF), Islamic University of Indonesia (Universitas Islam Indonesia—UII). VBL method is carried out by creating a short duration video about an instrument according to the syllabus of instrument 1 subject such as AAS, UV-Vis Spectrophotometer, FTIR, GC-MS, and CV. In order to determine the effect of VBL method using, an analysis of scores obtained between the experimental class and the

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Fadilah, Sofiana Nur, Siti Marfu'ah, and Surjani Wonorahardjo. "Edu-Kit “Our Coffee” Development on Problem Based Learning Model for Vocational Agribusiness and Agrotechnology Programs on Material Separation Mixture." International Journal of Interactive Mobile Technologies (iJIM) 14, no. 12 (2020): 41. http://dx.doi.org/10.3991/ijim.v14i12.15571.

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<p>Student achievement in chemistry is relatively low because chemistry topics are not integrated with students’ expertise programs. The lack of variation in teaching material and learning model also reduces the motivation to study chemistry. One of the science-chemistry materials in vocational high schools is separation of mixture, taught in the agribusiness and agro technology specialization programs. Many business sectors such as cafes are starting to stand in the community, requiring coffee serving skills and also knowledge about coffee that can be viewed from the chemistry side. Che

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FADIAWATI, Noor, Chansyanah DIAWATI, and M. Mahfudz Fauzi SYAMSURI. "USING PROBLEM-BASED LEARNING TO IMPROVE STUDENTS CRITICAL THINKING SKILLS TO DEAL HOAX INFORMATION IN CHEMISTRY." Periódico Tchê Química 17, no. 35 (2020): 120–34. http://dx.doi.org/10.52571/ptq.v17.n35.2020.12_fadiawati_pgs_120_134.pdf.

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Critical thinking is the ability to think rationally and reflectively about what must be done or believed. This skill allows one to make logical decisions based on information obtained and processed according to ability. The development of critical thinking skills in learning is essential because they enable students to deal effectively with social, scientific, and practical problems. Therefore, this research aimed to describe the effectivity of problem-based learning to improve students’ critical thinking skills to deal with hoax information in chemistry. This research was carried out through

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Sugiharti, Gulmah. "MEDIA APPLICATION OF FLASH BASED ANIMATION ON EVALUATION COURSE." International Journal of Research -GRANTHAALAYAH 7, no. 11 (2020): 49–56. http://dx.doi.org/10.29121/granthaalayah.v7.i11.2020.332.

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This research is an application of animation media that has been developed previously. The purpose of this study is to look at the effect of flash-based animation media that has been developed on improving learning outcomes in Chemistry Learning Outcomes Evaluation courses, and see the percent increase in student learning outcomes As a sample, the 2016 students consisted of 2 classes as an experimental class and a control class in the chemistry department at Unimed. After a normality test and a homogeneity test, the hypothesis is tested using a t test, and an increase in learning outcome

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Vysotsky, Yu B., E. S. Kartashynska, E. A. Belyaeva, D. Vollhardt, V. B. Fainerman, and R. Miller. "Quantum chemical clarification of the alkyl chain length threshold of nonionic surfactants for monolayer formation at the air/water interface." Physical Chemistry Chemical Physics 18, no. 11 (2016): 7932–37. http://dx.doi.org/10.1039/c6cp00166a.

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Indriyanti, Nurma Yunita, Sri Yamtinah, and Dyah Muawiyah. "An Inquiry into Students' Metacognition and Learning Achievement in a Blended Learning Design." International Journal of Emerging Technologies in Learning (iJET) 15, no. 21 (2020): 77. http://dx.doi.org/10.3991/ijet.v15i21.12907.

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The use of technology blurred the borders between classroom learning and online platform as a blended design. This design is appropriately applied in higher education in the fourth industrial revolution era. The study aimed to investigate the progression of undergraduate students' metacognition of blended learning and their achievement in the environmental chemistry course. The study employed a quantitative method. The quantitative method used a quasi-experiment research method. A non-equivalent post-tests group control design was applied. The population was fifty-nine students who enrolled in

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Sugiharti, Gulmah, and Bastian Jose Wandry Habeahan. "Influence of Learning Model Using Laboratory and Numeric Ability to Student Learning Result on Thermochemical Material." International Education Studies 11, no. 5 (2018): 154. http://dx.doi.org/10.5539/ies.v11n5p154.

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This study aims to determine the influence of learning models and numerical ability of students’ chemistry learning outcomes on Thermochemical materials, as well as the interaction between learning models through the use of laboratory and numerical ability. The study was conducted on the students of grade XI IPA SMA N 1 Stabat consisting of 9 classes and 2 classes as samples taken by purposive sampling. Experimental research with factorial 2 × 2 factorial ANOVA design. Learning result data obtained from result of thermochemical learning result and student numerical ability data obtained throug

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Pytela, Oldřich. "Determination of number of linear latent variables in a set of experimental chemical data." Collection of Czechoslovak Chemical Communications 55, no. 1 (1990): 42–54. http://dx.doi.org/10.1135/cccc19900042.

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A criterion has been suggested for determination of number of linear latent variables in experimental chemical sets which is based on the principle of scatter analysis applied to the method of conjugated deviations. The criterion suggested has been tested on data with preliminarily given error, and correct numbers of latent variables were obtained until the error load 70%. The phenomenon of dominance of latent variables with the maximum variability has been analyzed and tested. The criterion suggested has been applied to three classes of data sets - homogeneous complete, homogeneous incomplete

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Dana, Itzhack. "Classical and quantum transport in one-dimensional periodically kicked systems." Canadian Journal of Chemistry 92, no. 2 (2014): 77–84. http://dx.doi.org/10.1139/cjc-2013-0374.

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This paper is a brief review of classical and quantum transport phenomena, as well as related spectral properties, exhibited by one-dimensional periodically kicked systems. Two representative and fundamentally different classes of systems will be considered: those satisfying the classical Kolmogorov−Arnol’d−Moser scenario and those that do not. The experimental realization of some of these systems using atom-optics methods will be mentioned.

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Kurniawan, Muhammad Ali, Sri Rahayu, Fauziatul Fajaroh, and Saeed Almuntasheri. "Effectiveness of Dual Situated Learning Model in Improving High School Students’ Conceptions of Chemistry Equilibrium and Preventing Their misconceptions." Journal of Science Learning 3, no. 2 (2020): 99–105. http://dx.doi.org/10.17509/jsl.v3i2.22277.

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This study aims to compare the impact of the Dual Situated Learning Model (DSLM) and conventional instructions in improving High School Students’ understanding of chemical equilibrium concepts and the prevention of possible misconceptions. The study utilized a quasi-pretest-posttest control and experimental group design with two classes of XI SMAN as the research sample (N=60 students). Pre-posttests consisting of 12 two-tier questions (r = 0.691) used to assess the learners’ understanding of the chemical equilibrium. The results showed a significant difference in favor of the learners who tau

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Seprianto, Seprianto, and Molani Paulina Hasibuan. "Effectiveness of Blood Learning Based on the Ethnochemical Approach Module on Improving Science Literation Abilities." Budapest International Research and Critics Institute (BIRCI-Journal): Humanities and Social Sciences 4, no. 1 (2021): 1117–22. http://dx.doi.org/10.33258/birci.v4i1.1720.

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The purpose of this study was to determine the effectiveness of module-based online learning with an ethnochemical approach in improving students' scientific literacy skills. This research is a quasi-experimental study with a pretest-posttest nonequivalent control group design. The study population was students of the Faculty of Teacher Training and Education, Samudra University who were taking basic chemistry courses. The results showed an increase in science literacy skills based on the N-gain value in the experimental class of 0.54 in the medium category and 0.33 in the control class who we

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SUKMAWATI, Fatma, Punaji SETYOSARI, Sulton SULTON, and Purnomo PURNOMO. "THE EFFECT OF PROJECT-BASED COLLABORATIVE LEARNING ON CONCEPT MASTERY OF MUSHROOM: THE CASE OF SENIOR HIGH SCHOOL STUDENTS IN INDONESIA." Periódico Tchê Química 17, no. 34 (2020): 45–52. http://dx.doi.org/10.52571/ptq.v17.n34.2020.63_p34_pgs_45_52.pdf.

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Biology learning is highly recommended to be presented contextually following daily experience and phenomena. This study, a quasi-experimental research using a pretest-posttest non-equivalent control group design, aimed to understand the effect of project-based collaborative learning towards the concept mastery of mushrooms. The subjects of the study were 75 tenth grade of high school students in Surakarta City, Indonesia, divided into two classes: 38 students in the experimental class 37 in the control class. In the experimental class, the students were treated with project-based collaborativ

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Fabrykiewicz, Piotr, Radosław Przeniosło, and Izabela Sosnowska. "Crystal symmetry for incommensurate helical and cycloidal modulations." Acta Crystallographica Section A Foundations and Advances 77, no. 2 (2021): 160–72. http://dx.doi.org/10.1107/s205327332100111x.

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A classification of magnetic superspace groups compatible with the helical and cycloidal magnetic modulations is presented. Helical modulations are compatible with groups from crystal classes 1, 2, 222, 4, 422, 3, 32, 6 and 622, while cycloidal modulations are compatible with groups from crystal classes 1, 2, m and mm2. For each magnetic crystal class, the directions of the symmetry-allowed (non-modulated) net ferromagnetic moment and electric polarization are given. The proposed classification of superspace groups is tested on experimental studies of type-II multiferroics published in the lit

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Nasution, Hafni Indriati, Makharany Dalimunthe, and Dian Yustika Rini Nasution. "Perbedaan Hasil Belajar Kimia Siswa Berbantuan Peta Konsep dan Peta Pikiran Menggunakan CIRC." Jurnal Inovasi Pembelajaran Kimia 1, no. 1 (2019): 44. http://dx.doi.org/10.24114/jipk.v1i1.12537.

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This study aims to determine the differences in the chemistry learning outcomes of students taught with the help of media Concept Maps and Mind Maps using Cooperative Integrated Reading and Composition (CIRC) learning models on colloid subject matter. The population in this study is all students of class XI MIA SMA Swasta Nusantara Lubuk Pakam in the 2017/2018 school year consisting of 3 classes. The sample used in this study was taken by random sampling of two classes. The data analysis technique is a hypothesis test, namely the two-tail t-test. Based on the results of the data requirements t

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