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estimation (and arithmetic) ability. ... Additional reasons for the inconsistency of performance within the zone of partial knowledge and understanding may be that such understanding ... 1997; Siegler & Jenkins, 1989) and subtraction (Siegler, 1987) also indicate that “in young children's arithmetic, more- and less-advanced ...



Book title

The Development of Arithmetic Concepts and Skills


Lawrence Erlbaum

Publication Date



243 - 266

Total pages



Mathematical development, Estimation, Young children, Cognitive development