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Direct linkSiegler, Robert S.; Booth, Julie L. – Child Development, 2004
Two experiments examined kindergartners', first graders', and second graders' numerical estimation, the internal representations that gave rise to the estimates, and the general hypothesis that developmental sequences within a domain tend to repeat themselves in new contexts. Development of estimation in this age range on 0-to-100 number lines…
Descriptors: Age Differences, Mathematics Achievement, Achievement Tests, Elementary School Mathematics
