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Kidder, F. Richard2
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An Investigation of Nine-, Eleven-, and Thirteen-Year-Old Children's Comprehension of Euclidean Transformations.
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Kidder, F. Richard – 1974
This study investigated middle school children's ability to form a mental image of a planar figure and to: (1) mentally flip, turn, or slide this representation and then construct the resultant image in correct position ("performing individual motions"), (2) perform two such motions in succession ("composition of motions"), (3) perform the process…
Descriptors: Cognitive Development, Elementary School Mathematics, Geometric Concepts, Geometry
Elementary and Middle School Children's Comprehension of Euclidean Transformations
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Kidder, F. Richard – Journal for Research in Mathematics Education, 1976
This study investigated the ability of middle school children to perform Euclidean transformations mentally. The results indicated that the tasks were more difficult than Piagetian theory would indicate. (SD)
Descriptors: Cognitive Development, Elementary School Mathematics, Elementary Secondary Education, Geometric Concepts