This study examined the relationship between knowledge of sequence relations and the process of mental rotation in four-year-olds. Subjects were 12 preschool children who were tested individually. They were given a State Comparison Task (SCT) in which they were shown pairs of animal pictures, half identical and half mirror images of one another,…

Studied effectiveness of instruction in seriation and classification for kindergartners cognitively lagging behind their peers. Found that extensive classification and seriation instruction in a variety of formats was particularly helpful in facilitating cognitive gains for struggling kindergartners. Individualized instruction provided children…

Six mildly and moderately retarded children (ages 6-8) were instructed in the Piagetian constructs of unidimensional classification and/or seriation using the "Piacelleration" learning set technique. After one semester, subjects made significant gains on: classification and seriation tasks, the Peabody Picture Vocabulary Test, and the…

Key elements in the construction of an operation were an integral part of an empirical study designed to test practical, pedagogical implications of the Piagetian model of cognitive growth. A total of 49 kindergarten children were pretested to determine their levels of seriation and classification operations. Pretests were conducted with a battery…

Describes longitudinal study of the development of understanding of two logical properties of number by 36 children during the first three years of primary school in Glasgow. Piagetian tests and number skills tests were administered to explore the acquisition of number as class and number as order concepts. (Author/LRW)