How fragile is consolidated knowledge?: Ben's comparisons of infinite sets |
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Authors: | Pessia Tsamir Tommy Dreyfus |
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Institution: | School of Education, Tel Aviv University, P.O. Box 39040, Ramat Aviv, Tel Aviv 69978, Israel |
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Abstract: | This article builds on two previous ones in which we presented the processes of construction and consolidation of one student's knowledge structures about comparisons of infinite sets, according to a recently proposed theory of abstraction. In the present article, we show that under slight variations of context, knowledge structures that have apparently been well-consolidated may become inactive and subordinate to more primitive ones. |
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Keywords: | Abstraction Consolidation Fragility of knowledge structures Comparison-of-infinite-sets |
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