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Peer reviewed
Direct linkAit Tahar, M.; Schadschneider, A.; Stollenwerk, J. – Physics Education, 2019
This article is about the development of an Internet-based remotely-controlled physical experiment, this is a part of the Remotely Controlled Laboratory at the University of Applied Sciences of Cologne known as TH Köln. The main experimental set-up is based on Pohl's Torsion Pendulum which was enhanced by a PXI measurement system and a webcam. In…
Descriptors: Educational Technology, Technology Uses in Education, Science Experiments, Science Laboratories
Van De Heyde, Valentino; Siebrits, André – Research in Science & Technological Education, 2019
Background: Students' well preparedness for laboratory sessions is of importance for a number of reasons including them being able to engage in and learn from the session and in acquiring the necessary laboratory skills needed for the scientific community and for possible further work in industry. To enhance the preparedness of the students an…
Descriptors: Student Attitudes, Physics, Science Instruction, Blended Learning
Download full textHadiati, Soka; Kuswanto, Heru; Rosana, Dadan; Pramuda, Adi – International Journal of Instruction, 2019
This study aims to examine students' reasoning based on the model in each laboratory work style and find the effect on scientific attitude and student activity. This study uses a quantitative approach with the experimental method. The study was conducted in three classes with different lab work styles. Arduino and sensors were used as a…
Descriptors: Logical Thinking, Scientific Attitudes, Laboratory Procedures, Open Source Technology
Militello, Kevin T.; Lazatin, Justine C. – Biochemistry and Molecular Biology Education, 2017
Clustered regularly interspaced short palindromic repeats (CRISPRs) represent a novel type of adaptive immune system found in eubacteria and archaebacteria. CRISPRs have recently generated a lot of attention due to their unique ability to catalog foreign nucleic acids, their ability to destroy foreign nucleic acids in a mechanism that shares some…
Descriptors: Undergraduate Students, Biochemistry, Molecular Biology, Science Laboratories
Silverstein, Todd P.; Heller, Stephen T. – Journal of Chemical Education, 2017
Since at least the 1960s, organic chemistry textbooks have featured pK[subscript a] tables for organic acids that include values for H[subscript 2]O and H[subscript 3]O[superscript +] (15.74 and -1.74, respectively) that are thermodynamically and chemically indefensible. Here we trace this error back to Brønsted's early contributions in the 1920s…
Descriptors: Undergraduate Study, Organic Chemistry, Science Laboratories, Laboratory Experiments
Lu, Guo-ping; Chen, Fei; Cai, Chun – Journal of Chemical Education, 2017
The nucleophilic aromatic substitution reaction and thia-Michael addition using thiourea as an odorless, cheap, and easy-to-handle sulfur source in water are described, which can be used to teach upper-division undergraduates the role of thiourea in the formation of C-S bonds and the principles of green chemistry. The use of a cheap, nontoxic…
Descriptors: Undergraduate Study, Organic Chemistry, Science Laboratories, Scientific Concepts
Rusek, Martin; Beneš, Pavel; Carroll, John – Journal of Chemical Education, 2018
The role of practical work in the training of student teachers is central to the development of their future pedagogy and practice. However, not all laboratory based activities give sufficient challenge in the development of both cognitive and practical skills. The activity proposed in this paper helps reinforce an understanding of reaction…
Descriptors: Science Instruction, Science Experiments, Science Laboratories, Laboratory Experiments
Felton, Daniel E.; Moberly, James G.; Ederer, Martina M.; Hartzell, Patricia L.; Waynant, Kristopher V. – Journal of Chemical Education, 2018
Additions to the popular evaporation rate determination laboratory of alcohol-based hand-rub sanitizers are described here. Significantly, inquiry-driven protocols for formulating hand-rub sanitizers, falling-ball viscometry, and sanitizer efficacy are included. Incorporation of familiar substances ("molecular relevance") enables…
Descriptors: Chemistry, Science Instruction, College Science, Undergraduate Study
Zhang, Nianhui; Yu, Dong; Zhu, Xiaofeng – Biochemistry and Molecular Biology Education, 2018
The practice of RNA isolation in undergraduate experimental courses is rare because of the existence of robust, ubiquitous and stable ribonucleases. We reported here modifications to our original protocol for RNA isolation from plant tissues, including the recovery of nucleic acids by ethanol precipitation at 0 degrees C for 10 min and the…
Descriptors: Genetics, Undergraduate Study, Science Experiments, College Science
Marino, Michael A. – ProQuest LLC, 2018
A study was conducted to investigate the extent to which previous science achievement affected student performance in traditional hands-on and virtual laboratory environments. A sample of 70 first-year college students was employed in a counterbalanced A-B-A-B experimental design. The study spanned four instructional weeks of laboratory…
Descriptors: Hands on Science, Virtual Classrooms, Science Laboratories, College Freshmen
Bobbie Seyedmonir – ProQuest LLC, 2018
The purpose of this study was twofold: (1) to determine the effectiveness of virtual laboratories relative to traditional or blended laboratories in the attainment of conceptual knowledge and skill in microscopy; and (2) to explore how such technologies are integrated in real world classrooms. Four sections of a non-major's introductory biology…
Descriptors: Laboratory Equipment, Laboratory Experiments, Technology Integration, Biology
Larsen, Molly C.; Perkins, Russell J. – Journal of Chemical Education, 2016
A low-cost, time-resolved spectroscopy experiment appropriate for third year physical chemistry students is presented. Students excite o-methyl red in basic solutions with a laser pointer and use a modular spectrometer with a CCD array detector to monitor the transient spectra as the higher-energy cis conformer of the molecule converts back to the…
Descriptors: Undergraduate Students, Chemistry, Physics, Science Laboratories
Tapia-Pineda, Adabelia; Perez-Arrieta, Carlos; Silva-Cuevas, Carolina; Paleo, Ehecatl; Lujan-Montelongo, J. Armando – Journal of Chemical Education, 2016
A simple, microscale experiment was developed with the aim of demonstrating the concept of umpolung in synthetic organic chemistry. Starting from a common alkyl sulfinate, students perform a polarity inversion by performing a Grignard-based sulfoxide synthesis and a Mannich-type formamide synthesis. The products are purified without chromatography…
Descriptors: Organic Chemistry, Science Experiments, Scientific Concepts, College Science
Angelani, Carla R.; Carabias, Pablo; Cruz, Karen M.; Delfino, José M.; Sautu, Marilina; Espelt, María V.; Ferreira-Gomes, Mariela S.; Gómez, Gabriela E.; Mangialavori, Irene C.; Manzi, Malena; Pignataro, María F.; Saffioti, Nicolás A.; Salvatierra Fréchou, Damiana M.; Santos, Javier; Schwarzbaum, Pablo J. – Biochemistry and Molecular Biology Education, 2018
Metabolic control analysis (MCA) is a promising approach in biochemistry aimed at understanding processes in a quantitative fashion. Here the contribution of enzymes and transporters to the control of a given pathway flux and metabolite concentrations is determined and expressed quantitatively by means of numerical coefficients. Metabolic flux can…
Descriptors: Metabolism, Biochemistry, Cytology, Laboratory Procedures
Moya, A. A. – Physics Education, 2018
We have designed a simple Arduino-based experiment to study free fall. The experimental data associated to the free and vertical fall movement of a brass saucer are gathered with the help of an ultrasonic distance sensor and an Arduino board. The position-time curves obtained from different initial heights are then plotted and the acceleration of…
Descriptors: Physics, Scientific Concepts, Laboratory Experiments, Science Education
