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Sack, Jeff – American Biology Teacher, 2005
OsmoBeaker is a CD-ROM designed to enhance the learning of diffusion and osmosis by presenting interactive experimentation to the student. The software provides several computer simulations that take the student through different scenarios with cells, having different concentrations of solutes in them.
Descriptors: Computer Simulation, Computer Simulation, Computer Assisted Instruction, Science Instruction
Papastephanou, Marianna – Ethics and Education, 2010
The aim of this article is to examine ways in which localized research runs the risk of becoming a boundary discourse in a negative sense. The exaggerated emphasis on immanent critique, contextualization and incommensurability may lead discourse and disciplines to an isolationist self-understanding that leaves unchallenged or even entrenches…
Descriptors: Epistemology, Educational Research, Inclusion, Barriers
Chi, Michelene T. H.; Roscoe, Rod D.; Slotta, James D.; Roy, Marguerite; Chase, Catherine C. – Cognitive Science, 2012
Studies exploring how students learn and understand science processes such as "diffusion" and "natural selection" typically find that students provide misconceived explanations of how the patterns of such processes arise (such as why giraffes' necks get longer over generations, or how ink dropped into water appears to "flow"). Instead of…
Descriptors: Instructional Effectiveness, Botany, Misconceptions, Scripts
Peer reviewed
Borovoy, Alexander – Quantum, 1991
Describes the process of osmosis from its discovery by Nollet in 1848 to modern applications. Uses experimental descriptions, illustrations, and photographs to explain osmosis. Discusses the technology of producing perfect filters and their applications in reverse osmosis to purify salt water and to filter blood in kidney machines. (PR)
Descriptors: Biology, Chemistry, Diffusion (Physics), Enrichment Activities
Meir, Eli; Perry, Judith; Stal, Derek; Maruca, Susan; Klopfer, Eric – Cell Biology Education, 2005
Diffusion and osmosis are central concepts in biology, both at the cellular and organ levels. They are presented several times throughout most introductory biology textbooks (e.g., Freeman, 2002), yet both processes are often difficult for students to understand (Odom, 1995; Zuckerman, 1994; Sanger "et al.", 2001; and results herein). Students…
Descriptors: Science Instruction, College Science, Instructional Effectiveness, Science Experiments
Peer reviewed
Jensen, Murray S.; And Others – Journal of Computers in Mathematics and Science Teaching, 1996
Describes the development, use, and evaluation of the "Osmosis Program" as a teaching tool to elicit and challenge college students' understanding about diffusion and osmosis. Results showed students using the program performed better on a diffusion and osmosis assessment test than students not using the program. (Author/MKR)
Descriptors: Academic Achievement, Biology, College Students, Computer Software Evaluation
Peer reviewed
Luoma, John R.; Krupkin, R. Scott – Journal of College Science Teaching, 1990
A demonstration that can be used to illustrate diffusion and osmosis is presented. Discussed are materials, procedures, and an explanation for the effect. (CW)
Descriptors: Biological Sciences, Botany, College Science, Higher Education
Peer reviewed
Odom, Arthur Louis – American Biology Teacher, 1995
Tests on diffusion and osmosis given to (n=116) secondary biology students, (n=123) nonbiology majors, and (n=117) biology majors found that, even after instruction, students continue to have misconceptions about these ideas. Appendix includes diffusion and osmosis test. (MKR)
Descriptors: Biology, College Students, Diffusion (Physics), High Schools
Peer reviewed
Slater, C. S.; Paccione, J. D. – Chemical Engineering Education, 1987
Focuses on the development of a pilot unit for use in an advanced separations process laboratory in an effort to develop experiments on such processes as reverse osmosis, ultrafiltration, adsorption, and chromatography. Discusses reverse osmosis principles, the experimental system design, and some experimental studies. (TW)
Descriptors: Chemical Engineering, College Science, Engineering Education, Higher Education
Odom, A. Louis; Barrow, Lloyd H. – 1993
The data for this study were obtained from a sample of 117 biology majors enrolled in an introductory biology course. The Diffusion and Osmosis Diagnostic Test, composed of 12 two-tier items, was administered to the students. Among the major findings are: (1) there was no significant difference in scores of male and female students; (2) math…
Descriptors: Biology, Chemistry, College Freshmen, College Science
Peer reviewed
Christianson, Roger G.; Fisher, Kathleen M. – International Journal of Science Education, 1999
Reports on the effects of constructivist versus traditional teaching approaches on university students' learning about osmosis and diffusion. Students understood diffusion and osmosis more deeply in the constructivist-informed classroom, which used small discussion groups rather than traditional large lecture groups. Suggests ways to improve…
Descriptors: Concept Formation, Constructivism (Learning), Diffusion (Physics), Discussion (Teaching Technique)
Peer reviewed
Nicolini, Nicoletta; Pentella, Antonio – Journal of Chemical Education, 1988
Describes two experiments for demonstrating the properties of osmosis and semipermeable membranes. Gaseous and liquid osmosis are studied through the use of common laboratory chemicals and equipment. Offers explanations for the phenomena with diagrams. (ML)
Descriptors: Biochemistry, Chemistry, College Science, Demonstrations (Educational)
Peer reviewed
Odom, Arthur L.; Kelly, Paul V. – Science Education, 2001
Explores the effectiveness of concept mapping, the learning cycle, expository instruction, and a combination of concept mapping/learning cycle in promoting conceptual understanding of diffusion and osmosis. Concludes that the concept mapping/learning cycle and concept mapping treatment groups significantly outperformed the expository treatment…
Descriptors: Concept Formation, Concept Mapping, Diffusion (Physics), Learning Processes
Peer reviewed
Tucker, David C. – Science Teacher, 1986
Presents an open-ended experiment which has students exploring polymer chemistry and reverse osmosis. This activity involves construction of a polymer membrane, use of it in a simple osmosis experiment, and application of its principles in solving a science-technology-society problem. (ML)
Descriptors: Chemistry, Problem Solving, Science Education, Science Experiments
Peer reviewed
Cocanour, Barbara; Bruce, Alease S. – Journal of College Science Teaching, 1985
Shows how the natural membrane of a decalcified chicken egg can demonstrate the principle of osmosis within a single class period. Various glucose and saline solutions used, periods of time, physiological effects experiments, and correction for differences in initial weights are noted. (DH)
Descriptors: Biology, College Science, Demonstrations (Educational), Diffusion (Physics)