At which period of cognitive development do children become familiar with the exchange of mathematical operations?
Concrete operation
Per Piaget's stages of cognitive development, reversibility of thought and understanding of the exchange/interchange of mathematical operations (e.g. commutativity, undoing an operation) emerges during the Concrete Operational stage (approx. 7-11 years), when children can mentally manipulate concrete objects and operations logically. Hence option (C) is correct.
A child studies in primary and upper primary classes in which of the following stages?
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