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| Home > JCE Print > Journal of Chemical Education > Issues >
2003
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August
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Information, Textbooks, Media, Resources
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Teaching with Technology
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Discovery Videos: A Safe, Tested, Time-Efficient Way To Incorporate Discovery-Laboratory Experiments into the Classroom
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Lyubov Hoffman Laroche
CUST, Department of Education, University of British Columbia, Vancouver, BC V6T 1Z4, CanadaGary Wulfsberg
Director of Arts Program, Department of Chemistry, Middle Tennessee State University, Murfreesboro, TN 37132 Barbara Young
Department of Educational Leadership, Middle Tennessee State University, Murfreesboro, TN 37132
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August 2003
Vol. 80 No. 8
p. 962
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| Abstract |
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When it is infeasible to have students do some experimental parts of discovery laboratory experiments, instructors can demonstrate the reactions for students to evaluate as part of their discovery process. As an alternative to time-consuming and hazardous live demonstrations, we have developed video demonstrations of reactions with pauses for students to discover concepts. Digitally animated videos of two experiments, "Some Reactions of Cations" and "Periodicity in the Activity Series of Metals", were filmed and used in inorganic chemistry and honors-level general chemistry courses; we believe that the videos are also suitable for use in secondary schools. Quantitative and qualitative educational research was carried out in the inorganic class comparing the use of videos and live instructor demonstrations. No statistically significant difference was found in any learning outcome and no clear-cut student preference emerged. The significant saving of instructor time and the reduction of risk by using the videos therefore appears to have been accomplished without harm to student learning or interest.
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| Supplement |
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The entire contents of the two Discovery Videos are available as segmented video clips at JCE WebWare.
Instructions and scripts for the video demonstrations, a set of quiz and exam questions, student worksheets, and honors-level student responses to the questionnaire are available here.
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 Contents |
JCE2003p0962W.doc
(Microsoft Word)
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| Download |
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| More Information |
Citation |
Laroche, Lyubov Hoffman; Wulfsberg, Gary; Young, Barbara. J. Chem. Educ. 2003 80 962.
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Keywords |
CER Constructivism; Chemical Education Research; Demonstrations; General Chemistry; Inorganic Chemistry; Inquiry-Based / Discovery Method; Introductory / High School Chemistry; Laboratory Instruction; Multimedia; Periodicity / Periodic Table; Safety / Hazardous Substances
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History |
Created:
Last Updated: |
June 30, 2003
February 28, 2005
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Link to Featured Molecules added (April 2004).
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