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María Evangelina Carezzano; María de las Mercedes Oliva; Emiliano Foresto; Pablo Bogino; Walter Giordano – Journal of Biological Education, 2024
Plant extracts and their components have been reported to have antimicrobial properties against phytopathogens. Although such properties could be harnessed for the development of new pathogen control strategies, there are no standardised methods for their assessment in different extracts. The laboratory exercise presented here involves the use of…
Descriptors: Laboratory Experiments, Science Education, Microbiology, Plants (Botany)
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Sean Till; David A. Kaminsky – Advances in Physiology Education, 2024
Here we demonstrate how data from the clinical pulmonary function lab can help students learn about the principle of airway-parenchymal interdependence. We examined the relationship between airway conductance (Gaw) and lung volume (thoracic gas volume, TGV) in 48 patients: 17 healthy; 20 with emphysema, expected to have reduced airway-parenchymal…
Descriptors: Physiology, Science Instruction, Teaching Methods, Diseases
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Anna Laguta; Natalya Vodolazkaya; Dmitry Nerukh – Journal of Chemical Education, 2024
Chemistry experiments involving biological aspects are in high demand. This laboratory exercise blends biochemistry and physical chemistry, illustrates key concepts of the virus capsid surface, and is designed for a chemistry laboratory course for students majoring in biology in college. The experimental part provides a mastery of…
Descriptors: Undergraduate Students, Science Instruction, Chemistry, Biochemistry
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Goldfarb, Jake H.; Orpella, Joan; Jackson, Eric S. – Journal of Speech, Language, and Hearing Research, 2023
Purpose: Most neural and physiological research on stuttering focuses on the fluent speech of speakers who stutter due to the difficulty associated with eliciting stuttering reliably in the laboratory. We previously introduced an approach to elicit stuttered speech in the laboratory in adults who stutter. The purpose of this study was to determine…
Descriptors: Adolescents, Children, Stuttering, Laboratory Experiments
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Young, Douglas T. – Physics Teacher, 2023
Experiments involving RC circuits are an integral part of introductory physics courses. Previous articles using RC circuits describe determining the charge on a Van de Graaff generator, measuring currents and voltages in a charging RC circuit using a multimeter or an Arduino, measuring the decay constants of complex RC circuits, and using the…
Descriptors: Science Instruction, Science Experiments, Physics, Spreadsheets
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Sarkar, Soumen; Pal, Sanjoy Kumar; Chakrabarti, Surajit – Physics Teacher, 2023
A smartphone is a powerful learning aid in the hands of a large section of students around the world. The camera of the phone can be used for several learning purposes apart from its obvious purpose of photographing. If the focal length of the lens of the camera can be determined, several experiments in optics can be performed with it. In some…
Descriptors: Telecommunications, Handheld Devices, Optics, Physics
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Fletcher, Kurtis A.; Lallier, Nicole M.; Masman, Jack M. – Physics Teacher, 2023
Inspired by a commercially produced scattering experiment that was popular beginning in the 1960s, we have developed a Nerf-projectile-based educational activity to demonstrate the basics of particle scattering experiments.
Descriptors: Science Experiments, Science Instruction, Physics, Motion
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Othon, Christina M. – Physics Teacher, 2023
The early 20th century marked a number of transformational experimental and theoretical discoveries in physics. Among them is one that is often neglected in the introductory physics curriculum, which revolutionized our understanding of the molecular world. Evidence for the thermal motions of atoms was first observed by Perrin in 1909, which had…
Descriptors: Toys, Physics, Science Experiments, Introductory Courses
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Erin E. Shortlidge; Amie M. Kern; Emma C. Goodwin; Jeffrey T. Olimpo – CBE - Life Sciences Education, 2023
Course-based undergraduate research experiences (CUREs) offer an expanding avenue to engage students in real-world scientific practices. Increasingly, CUREs are instructed by graduate teaching assistants (TAs), yet TAs may be underprepared to facilitate and face unique barriers when teaching CUREs. Consequently, unless TAs are provided…
Descriptors: Science Experiments, Teaching Assistants, Teacher Education, Undergraduate Students
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Alexander V. Shokurov; Carlo Menon – Journal of Chemical Education, 2023
Many aspects of electrochemical education, such as electroanalysis demonstrations, require three-electrode-cell experimental setups. Many researchers and educators use screen-printed electrochemical electrodes, which are miniature and disposable but are relatively expensive and use proprietary fabrication components. The present article describes…
Descriptors: Chemistry, Science Instruction, Scientific Research, Science Education
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Valeria Edelsztein – Journal of Chemical Education, 2023
High school students and students in the first years of college have difficulties in understanding the topic of stoichiometry and, in particular, the concept of limiting reactant. Proposals aimed at overcoming these learning obstacles tend to focus on analogies, and there are few sequences that approach teaching from an experimental perspective.…
Descriptors: High School Students, Stoichiometry, Scientific Concepts, Science Instruction
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Philipp Meyer – Journal of Chemical Education, 2023
Although diffusion is the subject of beginning chemistry classes, there are a variety of experiments, such as the spread of perfume in the classroom, that are often "incorrectly" explained by diffusion alone. To eliminate this common misconception, a recently published method is modified to determine the diffusion constant of hydrogen…
Descriptors: Scientific Concepts, Chemistry, Misconceptions, Science Experiments
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Morris, John; Winter, Margie – American Biology Teacher, 2021
We describe a series of three experiments in which students develop a model system for measuring the LC50 of household substances, using grass seed as the model organism. Students use statistical methods to compare two samples (using chi-square and Student's "t"-tests), conduct a two-level multifactor experiment to look at multiple…
Descriptors: Science Experiments, Measurement Techniques, Hazardous Materials, College Science
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Lynch, Hailey N.; Harnage, Austin H.; Liyana Pathiranage, Anuradha – Journal of Chemical Education, 2021
The aldol condensation reaction is one of the many synthesis reactions carried out in second semester organic chemistry laboratories. This reaction was integrated into a novel experiment requiring students to synthesize dibenzalace tone derivatives using the crossed-aldol condensation by reacting different types of benzaldehyde derivatives with…
Descriptors: Science Instruction, Scientific Concepts, Science Experiments, Measurement
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Li, Chengjun; Zheng, Qizheng; Xiang, Qin; Yu, Li; Chen, Peng; Gao, Danmei; Liu, Qinsong; He, Fengling; Yu, Danmei; Liu, Yuping; Chen, Changguo – Journal of Chemical Education, 2021
Oxygen reduction reaction (ORR),as a multielectron electrode reaction, is an important electrochemical reaction in the field of electrochemical energy storage systems. Herein, a new advanced electrochemical laboratory experiment is designed for undergraduates to master the preparation of oxygen reduction catalytic electrode. Students can use…
Descriptors: Chemistry, Kinetics, Science Experiments, Laboratory Experiments
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