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Kamii, Constance; Russell, Kelly A. – Journal for Research in Mathematics Education, 2010
Piaget (1971) made a distinction between intuitive (preoperational) time and operational (logico-mathematical) time. According to Piaget, operational time develops around 7-8 years of age and is characterized by children's ability to deduce, for example, that if A was born before B, A will always be older than B. When time is still intuitive,…
Descriptors: Time, Mathematical Concepts, Young Children, Elementary School Students