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A new two-step approach for hands-on teaching of gene technology: Effects on students' activities during experimentation in an outreach gene technology lab

Title data

Scharfenberg, Franz-Josef ; Bogner, Franz X.:
A new two-step approach for hands-on teaching of gene technology: Effects on students' activities during experimentation in an outreach gene technology lab.
In: Research in Science Education. Vol. 41 (2011) Issue 4 . - pp. 505-523.
ISSN 1573-1898
DOI: https://doi.org/10.1007/s11165-010-9177-2

Abstract in another language

Emphasis on improving higher level biology education continues. A new two-step approach to the experimental phases within an outreach gene technology lab, derived from cognitive load theory, is presented. We compared our approach using a quasi-experimental design with the conventional one-step mode. The difference consisted of additional focused discussions combined with students writing down their ideas (step one) prior to starting any experimental procedure (step two). We monitored students' activities during the experimental phases by continuously videotaping 20 work groups within each approach (N=131). Subsequent classification of student' activities yielded 10 categories (with well-fitting intra- and inter-observer scores with respect to both objectivity and reliability). Based on the students' individual time budgets, we evaluated students' roles during experimentation from their prevalent activities (by independently using two cluster analysis methods). Independently of the approach, two common clusters emerged, which we labeled as "all-rounders" and as "passive students", and two clusters specific to each approach: "Observers" as well as "high-experimenters" were identified only within the one-step approach whereas under the two-step conditions "managers" and "scribes" were identified. Potential changes in group- leading style during experimentation are discussed, and conclusions for optimizing science teaching are drawn. http://springerlink.metapress.com/content/u16950h044213107/fulltext.pdf

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER84321
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Didactics of Biology
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Didactics of Biology > Chair Didactics of Biology - Univ.-Prof. Dr. Franz Xaver Bogner
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 12 May 2015 06:12
Last Modified: 12 May 2015 06:12
URI: https://eref.uni-bayreuth.de/id/eprint/13395