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Secondary School Students' Improper Proportional Reasoning
Wim Van Dooren
Dirk De Bock
Elke De Bolle
Dirk Janssens
Lieven Verschaffel
其他書名
The Role of Direct Versus Indirect Measures
出版
ERIC Clearinghouse
, 2003
URL
http://books.google.com.hk/books?id=ElwMvwEACAAJ&hl=&source=gbs_api
註釋
A systematic series of studies by De Bock et al. revealed a strong, deep-rooted tendency among secondary school students to apply the proportional model in non-proportional problems involving lengths, areas and volumes of similar geometrical figures. In these studies, however, items were used involving direct measures for area and volume as well as indirect measures (e.g. the time to manure a piece of land as an indirect measure for its area), assuming that this would make no difference. The current study confirmed that there were no significant differences in performance related to the presence of direct or indirect measures in the items, but there were some differences in the applied solution strategies. These findings confirm the internal and external validity of the earlier studies on students' illusion of linearity. (Contains 1 figure and 3 tables.) [For complete proceedings, see ED500859.].
