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Design, implementation, and evaluation of a game-based application for aiding chemical engineering and chemistry students to review the organic reactions

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EDUCATION FOR CHEMICAL ENGINEERS 2021年 34卷 106-114页

作者： da Silva Junior, Jose Nunes Lima, Mary Anne Sousa Pimenta, Antonia Torres Avila Nunes, Fatima Miranda Monteiro, Alvaro Carvalho de Sousa, Ulisses Silva Leite Junior, Antonio Jose Melo Zampieri, Davila Alexandre, Francisco Serra Oliveira de Sousa, Ulisses Silva Pacioni, Natalia Lorena Winum, Jean-Yves Univ Fed Ceara Dept Quim Organ & Inorgan BR-60451970 Fortaleza CE Brazil Inst Fed Educ Ciencia & Tecnol Ceara BR-60040215 Fortaleza CE Brazil Univ Nacl Cordoba Fac Ciencias Quim Dept Quim Organ Haya Torre & Media Allende S-NX5000HUA Cordoba Argentina Univ Montpellier Fac Sci Chem Dept F-34095 Montpellier France Univ Montpellier IBMM ENSCM CNRS F-34296 Montpellier France

This article presents a multilingual (Portuguese, Spanish, English, and French) game-based application to the Android and the iOS platforms. The game allows undergraduate Chemical Engineering and Chemistry students to individually review organic reactions in an engaging and fun way by answering over 600 multi-choice questions. Undergraduate students tested and evaluated the game, and their opinions revealed that they liked to use the game as a complementary educational tool able to aid them in their studies. Moreover, the usability assessment of the game provided a good SUS score close to 79. (c) 2020 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

关键词： Organic chemistry Organic reactions computer-based learning Games

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Multiple representation for understanding data structures

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computerS & EDUCATION 1997年第1期29卷 1-11页

作者： Hanciles, B Shankararaman, V Munoz, J UNIV ZIMBABWE HARAREZIMBABWE

In this paper an approach to enhance the learning of abstract computing concepts by novice students is presented. This approach is based on effective use of multiple visual representations, and it was applied within the domain of linear data structures: array, stack, queue and linked list. A prototype computer-based instructional system called MRUDS (Multiple Representation for Understanding Data Structures) was developed and evaluated. It was found from the evaluation that the three presentation modules namely, analogy, representation and algorithm contributed to the students' learning process, each contributing to and reinforcing the effect of the others. (C) 1997 Elsevier Science Ltd.

关键词： data structures non-computing graduates beginning undergraduates in computing multiple representations computer-based learning

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Enhancement of efficiency of the training process with the use of digital technologies

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EDUCATION FOR CHEMICAL ENGINEERS 2023年第1期45卷 104-121页

作者： Barashkin, Roman Nurguatova, Aynagul Kalashnikov, Pavel Taktasheva, Dinara Tupysev, Anton Gubkin Russian State Univ Oil & Gas Natl Res Univ Dept Automat Technol Proc Leninsky Ave 65 Bldg 1 510 Moscow 119991 Russia Gubkin Russian State Univ Oil & Gas Natl Res Univ Dept Comp Aided Design Oil & Gas Ind Facil Leninsky Ave 65 Bldg 1 510 Moscow 119991 Russia Branch Russian State Univ Oil & Gas NRU Foreign Languages Dept Durmon Yuli St 34 Tashkent 100125 Uzbekistan Gubkin Russian State Univ Oil & Gas Natl Res Univ Dept Automated Control Syst Leninsky Ave 65 Bldg 1 510 Moscow 119991 Russia

The level of safety and efficiency of technological processes operation largely depends on the qualifications of operating personnel. In continuous processes of such industries as chemical, mining, processing, energy, etc., it is common practice to use computer simulators to master the skills of making the right decisions in emergency conditions or ability to choose an efficient mode of operation. With the aim of controlling the safety level of work, it is required to have an opportunity to evaluate the efficiency of methods and learning outcomes. There is no single approach to learning outcomes using simulator trainings at energy-providing enterprises with continuous and technological processes. The main task of such enterprises is to train students with a set of knowledge and skills that will ensure the required level of safety and operational efficiency. This research proposes the technique for training, which includes the sequence of theoretical and practical exercises, metrics for automatic recording of students' actions and criteria for assessing training efficiency. The authors have tested the proposed sequence of theoretical and practical exercises on the simulator on groups of engineering students. The results of the students' execution of practical tasks on the simulator have been recorded using the proposed metrics. based on the results the authors have proposed the criteria to assess students' understanding of causeand-effect relationships. The learning outcomes according to the technique and the proposed criteria have been verified with the help of blind test and the implementation of the final practical task on the simulator. The technique has been tested on different groups of students and it is obvious that due to the proposed metrics instructors are able to track the progress of learning. The research results can be applied at plants with continuous technological processes or in higher educational institutions. This practice-based approach to traini

关键词： Training simulators computer-based learning Human-computer interface Pedagogical issues Performance indicators Teaching strategies

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Teaching Fundamental Skills in Microsoft Excel to First-Year Students in Quantitative Analysis

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JOURNAL OF CHEMICAL EDUCATION 2015年第11期92卷 1840-1845页

作者： Rubin, Samuel J. Abrams, Binyomin Boston Univ Dept Chem Boston MA 02215 USA

Despite their technological savvy, most students entering university lack the necessary computer skills to succeed in a quantitative analysis course, in which they are often expected to input, analyze, and plot results of experiments without any previous formal education in Microsoft Excel or similar programs. This lack of formal education results in increased anxiety, students spending large amounts of time using the process of "trial and error" to complete the assignments, and detracts from the students' learning of the chemistry. Microsoft Excel tutorials that were previously introduced have either been not specific to chemistry, require multiple assignments throughout the semester to acquire the necessary skills, or are designed for deprecated versions of the software. In this work, we present an argument for implementing a chemistry-specific, version-agnostic spreadsheet interactive laboratory exercise that uses basic, general chemistry concepts to have students explore and learn the computer skills that are necessary to succeed in a quantitative analysis course. Student feedback data indicate that students felt that the interactive spreadsheet lab allowed them to develop skills that they identified as necessary for success in the course as well as for their future careers.

关键词： First-Year Undergraduate/General Second-Year Undergraduate Curriculum Analytical Chemistry Laboratory Instruction computer-based learning Quantitative Analysis

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A Toolkit to Quantify Target Compounds in Thin-Layer-Chromatography Experiments

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JOURNAL OF CHEMICAL EDUCATION 2018年第12期95卷 2191-2196页

作者： Mac Fhionnlaoich, Niamh Ibsen, Stuart Serrano, Luis A. Taylor, Alaric Qi, Runzhang Guldin, Stefan UCL Dept Chem Engn Torrington Pl London WC1E 7JE England

Thin-layer chromatography (TLC) is one of the basic analytical procedures in chemistry and allows the demonstration of various chemical principles in an educational setting. An often-overlooked aspect of TLC is the capability to quantify isolated target compounds in an unknown sample. Here, we present a suitable route to implement quantitative analysis in a lesson plan. We provide both a stand-alone software and an online webapp that allow students to obtain quantitative information from a developed TLC plate and present two suitable experiments, namely, the absorbance-based quantification of the colorant Sudan IV and the fluorescence-based quantification of rhodamine 6G, a fluorophore widely used in biotechnology. Students conduct TLC experiments following established protocols, take pictures of their TLC plates with mobile phones, and subsequently quantify the different compounds in the separate bands they observe.

关键词： General Public High School/Introductory Chemistry First-Year Undergraduate/General Second-Year Undergraduate Upper-Division Undergraduate Graduate Education/Research Continuing Education Analytical Chemistry Demonstrations Environmental Chemistry Laboratory Instruction Public Understanding/Outreach computer-based learning Hands-On learning/Manipulatives Inquiry-based/Discovery learning Problem Solving/Decision Making Laboratory Computing/Interfacing Laboratory Equipment/Apparatus Microscale Lab Quantitative Analysis Student-Centered learning Thin Layer Chromatography

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Reinforcing Protein Biochemistry: A Two-Week Experiment Studying Iron(III) Binding by the Transferrin Protein through Stoichiometric Determination, Stability Analysis, and Visualization of the Binding Site

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JOURNAL OF CHEMICAL EDUCATION 2024年第4期101卷 1656-1664页

作者： Benjamin-Rivera, Josue A. Otero, Mariela Perez Tinoco, Arthur D. Univ Puerto Rico Dept Chem Rio Piedras PR 00931 USA Univ Puerto Rico Dept Biol Rio Piedras PR 00931 USA

The two-week protein biochemistry experience described herein focuses on reinforcing key biochemical concepts and achieving significant learning domain accomplishments for students (Content Knowledge, Logical Mathematical Reasoning, Visualization, Information Literacy, and Knowledge Integration) and valuable teaching opportunities for instructors. The experience encompasses an exploration of the transport protein serum transferrin as an important regulator of Fe(III) biochemistry and incorporates techniques to assess protein-metal stoichiometry and protein stability and to perform molecular visualization. Students gain practical experience in utilizing spectrophotometric analysis for constructing stoichiometric curves, in performing urea-PAGE, and in applying the PyMOL program to evaluate metal coordination at a protein binding site and the associated protein structural change. The learning and teaching accomplishments provide valuable skills that can be extended into research and translated to other teaching formats.

关键词： Upper-Division Undergraduate Biochemistry Laboratory Instruction computer-based learning Hands-On learning Coordination Compounds Electrophoresis Proteins Quality Analysis UV-Vis Spectroscopy Metal Binding Site Transferrin ConformationChange Urea-PAGE Stoichiometry PyMOL

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Preparing GTAs for Active learning in the General Chemistry Lab: Development of an Evidence-based Rehearsal Module for a Mixed-Reality Teaching Simulator

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JOURNAL OF SCIENCE EDUCATION AND TECHNOLOGY 2021年第6期30卷 829-840页

作者： Geraets, Ashley A. Nottolini, Isadore L. Doty, Constance M. Wan, Tong Chini, Jacquelyn J. Saitta, Erin K. H. Univ Cent Florida Chem Dept Orlando FL 32816 USA Univ Cent Florida Phys Dept Orlando FL 32816 USA Westminster Coll Dept Phys Salt Lake City UT USA

There is an assumption that graduate teaching assistants (GTAs) have mastery of the chemistry content they are teaching and preparation to instruct students. However, in reformed classrooms, GTAs may need more support and resources. We designed chemistry rehearsal modules for use in a mixed-reality teaching simulator to help prepare GTAs for instruction in reformed classrooms by targeting pedagogical skills. The modules included familiar curricular activities and research-based student conceptions. We conducted an exploratory study with three experienced GTAs to investigate the utilization of the module inside the simulator. The three GTAs practiced cold calling and error framing and participated in a 1-h interview based on their experience. We recorded, transcribed, and coded the interviews and the simulator sessions. The three GTAs implemented the skills and provided feedback that supported the use of the module in the simulator and the authentic nature of the practice. Simulated environments that encourage personalized learning, skill practice, and responding to literature-based student ideas provide a promising avenue for graduate teaching assistant professional development.

关键词： Graduate education research Chemistry education research computer-based learning Misconceptions discrepant events Professional development TA training orientation

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Dynamical Approach to Multiequilibria Problems for Mixtures of Acids and Their Conjugated Bases

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JOURNAL OF CHEMICAL EDUCATION 2014年第7期91卷 1009-1016页

作者： Glaser, Rainer E. Dearosa, Marco A. Salau, Ahmed Olasunkanmi Chicone, Carmen Univ Missouri Dept Chem Columbia MO 65211 USA Univ Missouri Dept Math Columbia MO 65211 USA

Mathematical methods are described for the determination of steady-state concentrations of all species in multiequilibria systems consisting of several acids and their conjugated bases in aqueous solutions. The main example consists of a mixture of a diprotic acid H(2)A, a monoprotic acid HB, and their conjugate bases. The reaction equations lead to a system of autonomous ordinary differential equations for the species concentrations. The traditional equilibrium approach is briefly reviewed. Single variable polynomials are determined that are satisfied by the equilibrium proton concentrations. The remaining species are then given explicitly by rational functions of these proton concentrations, the equilibrium constants, and the initial concentrations of the other species. A quintic polynomial was derived to determine the equilibrium proton concentration for the example system. It is shown to reduce to a quartic polynomial in the absence of the second acid HB. An alternative dynamical approach to the equilibrium problem is described that involves the formulation of the kinetic rate equations for each species, which together constitute a nonlinear system of ordinary differential equations. The equilibrium concentrations are determined by evolving the initial concentrations via this dynamical system to their steady state. This dynamical approach is particularly attractive because it can easily be extended to determine equilibrium concentrations for arbitrarily large multiequilibria systems. With the equations provided here and some knowledge of computing software, the fast and accurate computation of equilibrium concentrations becomes feasible for the education of upper-division undergraduate and graduate students as well as for the study of research problems. This dynamical method also serves to introduce students to nonlinear dynamical systems, which are e sential for the study of dynamic problems in chemistry, for example, oscillatory reactions.

关键词： Upper-Division Undergraduate Graduate Education/Research Interdisciplinary/Multidisciplinary computer-based learning Equilibrium Mathematics/Symbolic Mathematics Acids/Bases

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The Digital Task Navigator as a Scaffold for Supporting Higher Education Students while Solving Tasks in Organic Chemistry

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JOURNAL OF CHEMICAL EDUCATION 2023年第10期100卷 3818-3824页

作者： Keller, David Hermanns, Jolanda Univ Potsdam Zent Lehrerbildung & Bildungsforschung D-14476 Potsdam Germany Univ Potsdam Inst Chem D-14476 Potsdam Germany

Scaffolds can be seen as a suitable tool to support students' learning chemistry. Digital task navigators, written scaffolds that support students in solving tasks in organic chemistry, were developed, used, and evaluated for this study. A paper task navigator was further developed into a digital task navigator, which included links to explanations of special terms that were unknown to the students. The students could use the links to find these explanations if they needed them. Four newly designed digital task navigators were evaluated using questionnaires. The students rated this newly developed digital scaffold quite highly. Students who used the links to the explanations felt that these were also helpful. The results of the students' ratings can be used to design additional digital task navigators for other topics as well as to develop this scaffold further.

关键词： first-year undergraduate/general organic chemistry problem solving/decision making distance learning/self-instruction computer-based learning

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***: An Interactive Website with Exercises in Solving Structures from NMR Spectra

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JOURNAL OF CHEMICAL EDUCATION 2023年第2期100卷 962-968页

作者： Socha, Ondrej Osifova, Zuzana Dracinsky, Martin Inst Organ Chem & Biochem AS CR Prague 16000 Czech Republic Charles Univ Prague Fac Math & Phys Prague 12000 Czech Republic Charles Univ Prague Fac Sci Dept Organ Chem Prague 12800 Czech Republic

Nuclear magnetic resonance (NMR) spectroscopy is a very powerful analytical method that has found many applications in physics, chemistry, biology, and medicine. It is an indispensable tool particularly for synthetic chemists because it can be used for a rapid elucidation of the structures of organic compounds. For this reason, NMR spectral interpretation is a part of the core knowledge of all chemistry students, taught to them from the first years of their undergraduate studies. However, NMR spectral interpretation skills can only be learned by experience. We present a new educational website that includes more than 160 NMR spectral assignments measured for real samples. Each assignment contains NMR spectra of an unknown compound, with the task for the students being to determine its structure. Basic assignments contain only one-dimensional H-1 and C-13 NMR spectra;advanced assignments also offer two-dimensional correlation spectra. The web application is enriched with an interactive chemical structure drawing tool, which gives the users immediate feedback about their proposed structures. The presented assignments are graded according to difficulty to keep both beginners and advanced students motivated. The web page will be continuously updated with new spectral problems.

关键词： Second-Year Undergraduate Organic Chemistry computer-based learning Distance learning/Self Instruction NMR Spectroscopy

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