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Article type: review article

For citation: Abstracts [Elektronnyi resurs]. Tätigkeitstheorie: E-Journal for Activity Theoretical Research in Germany, 2019. Vol. 15, no. 1, pp. 8–10.

A Part of Article

The solidified calculation by counting, the lack of thinking in the part-whole concept and the disregard for the cardinal meaning of our place-value-numbers still represent the typical features of pupils with arithmetical difficulties. Twenty years of didactic research and innovative practice have failed to solve this core problem of mathematics education.



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