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Qi Zheng – Journal of Microbiology & Biology Education, 2024
The importance of teaching the Luria-Delbrück experiment to biology students is increasingly recognized by educators, and improved pedagogical methods for teaching the classic experiment have been proposed and tested in the classroom. However, there are still obstacles that impede the proper teaching of the classic experiment. This note proposes…
Descriptors: Science Instruction, Biology, Science Experiments, Educational Improvement
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Vandervoort, Kurt – Physics Teacher, 2020
Newton's law of cooling describes an object whose temperature decreases exponentially with time. Because of its many applications, it is a frequent topic of introductory physics labs. In this article, I describe an experiment designed for the freshman year algebra-based physics course that applies this law to answering the question, "Why…
Descriptors: Science Instruction, Scientific Principles, Heat, Science Experiments
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Pietsch, Renée B.; Hanlon, Regina; Bohland, Cynthia; Schmale, David G., III – Science Teacher, 2016
This article describes an interdisciplinary unit in which students explore biological "ice nucleation"--by particles that cause water to freeze at temperatures above -38°C--through the lens of the microbial ice nucleator "Pseudomonas syringae." Such This activity, which aligns with the "Next Generation Science…
Descriptors: Science Instruction, Interdisciplinary Approach, Experimental Groups, Units of Study
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Lau, Kwok-chi – American Biology Teacher, 2013
This article presents a tangible model used to help students tackle some misconceptions about enzyme actions, particularly the induced-fit model, enzyme-substrate complementarity, and enzyme inhibition. The model can simulate how substrates induce a change in the shape of the active site and the role of attraction force during enzyme-substrate…
Descriptors: Models, Biochemistry, Misconceptions, Scientific Methodology
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Taylor, John R. – American Biology Teacher, 2014
This simple inquiry-based lab was designed to teach the principle of osmosis while also providing an experience for students to use the skills and practices commonly found in science. Students first design their own experiment using very basic equipment and supplies, which generally results in mixed, but mostly poor, outcomes. Classroom "talk…
Descriptors: Inquiry, Active Learning, Science Laboratories, Science Instruction
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Eibisch, Mandy; Fuchs, Beate; Schiller, Jurgen; Sub, Rosmarie; Teuber, Kristin – Journal of Chemical Education, 2011
Matrix-assisted laser desorption and ionization time-of-flight mass spectrometry (MALDI-TOF MS) is increasingly used to investigate the phospholipid (PL) compositions of tissues and body fluids, often without previous separation of the total mixture into the individual PL classes. Therefore, the questions of whether all PL classes are detectable…
Descriptors: Chemistry, Lasers, Laboratory Experiments, Science Experiments
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Groff, Jeffrey R. – Physics Teacher, 2012
Bioscience and premedical profession students are a major demographic served by introductory physics courses at many colleges and universities. Exposing these students to biological applications of physical principles will help them to appreciate physics as a useful tool for their future professions. Here I describe an experiment suitable for…
Descriptors: Science Instruction, Optics, Physics, College Science
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Ens, S.; Olson, A. B.; Dudley, C.; Ross, N. D., III; Siddiqi, A. A.; Umoh, K. M.; Schneegurt, M. A. – Biochemistry and Molecular Biology Education, 2012
Gel electrophoresis is the single most important molecular biology technique and it is central to life sciences research, but it is often too expensive for the secondary science classroom or homeschoolers. A simple safe low-cost procedure is described here that uses household materials to construct and run DNA gel electrophoresis. Plastic…
Descriptors: Science Activities, Physical Sciences, Genetics, Cytology
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Pearce, Amy R.; Sale, Amanda Lovelace; Srivatsan, Malathi; Beck, Christopher W.; Blumer, Lawrence S.; Grippo, Anne A. – Bioscene: Journal of College Biology Teaching, 2013
We developed an inquiry-based biology laboratory exercise in which undergraduate students designed experiments addressing whether material from the neem tree ("Azadirachta indica") altered bean beetle ("Callosobruchus maculatus") movements and oviposition. Students were introduced to the bean beetle life cycle, experimental…
Descriptors: Biology, College Science, Inquiry, Active Learning
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Snodgrass, Meagan A.; Lux, Nicholas; Metz, Anneke M. – Journal of College Science Teaching, 2011
There is a continuing need for engaging inquiry-based laboratory experiences for advanced high school and undergraduate biology courses. The authors describe a guided-inquiry exercise investigating the pH-dependence of lactase enzyme that uses an inexpensive, wide-range buffering system, lactase dietary supplement, over-the-counter glucose test…
Descriptors: Science Laboratories, Biology, Science Process Skills, Introductory Courses
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Cheung, Lawrence L. W.; Styler, Sarah A.; Dicks, Andrew P. – Journal of Chemical Education, 2010
A short, semi-microscale synthesis of two 1,4-dihydropyridine drug analogues via a Hantzsch reaction is described, which is appropriate for a second-year undergraduate organic laboratory. Products are specifically chosen to highlight the biological relevance of this compound type while introducing the notion of a privileged structure.…
Descriptors: Spectroscopy, Chemistry, Science Instruction, Scientific Principles
Young, Sarah – National Science Teachers Association (NJ3), 2011
Hands-on, inquiry-based, and relevant to every student's life, "Gourmet Lab" serves up a full menu of activities for science teachers of grades 6-12. This collection of 15 hands-on experiments--each of which includes a full set of both student and teacher pages--challenges students to take on the role of scientist and chef, as they boil,…
Descriptors: Science Activities, Secondary Education, Scientific Principles, Biochemistry
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Erdogan, Ibrahim – Science Activities: Classroom Projects and Curriculum Ideas, 2006
In this extended biology, ecology, and earth science activity, students construct hands-on models of natural wastewater treatment and wastewater treatment facilities to achieve an understanding of wastewater treatment process in nature and wastewater treatment facilities. During this simulation activity, students have opportunities to learn…
Descriptors: Sanitation, Scientific Principles, Earth Science, Biology
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Porta, Angela R.; Dhawan, Puneet – Journal of College Science Teaching, 2006
Undergraduate biology programs are currently undergoing reform to involve students in biomedical research. Engaging students in more active, hands-on experiments allows students to discover scientific principles for themselves, and to develop techniques of critical thinking and problem solving. This models the world of real scientific research,…
Descriptors: Scientific Principles, Scientific Research, Scientists, Research Design
Smith, Robert Alan – 1997
Plant tissue culture has developed into a valid botanical discipline and is considered a key area of biotechnology, but it has not been a key component of the science curriculum because of the expensive and technical nature of research in this area. This manual presents a number of activities that are relatively easy to prepare and perform. The…
Descriptors: Biology, Biotechnology, High Schools, Higher Education
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