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Goodwyn, Susan W.; Acredolo, Linda P. – Child Development, 1993
Infants were exposed to symbolic gestures from their parents beginning at 11 months of age. In bimonthly interviews, mothers reported their infants' use of gestures and words. Results indicated a smaller but reliable difference between the onset of infants' use of symbolic gesture and the onset of their use of words than earlier research…
Descriptors: Body Language, Cognitive Development, Comparative Analysis, Infants
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Sutherland, Rosamund; Rojano, Teresa – Journal of Mathematical Behavior, 1993
This longitudinal study investigated the ways in which two groups of eight students used spreadsheets to represent and solve algebra problems and related this to their previous arithmetical experiences and evolving use of symbolic language. The spreadsheet environment supported students to move from specific to general thinking. Includes story…
Descriptors: Algebra, Case Studies, Computer Uses in Education, Concept Formation