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Didactical situations in building chidlren’s ideas about matematical concepts in preschool education

Introducing additive compare problems – traditional vs. constructivist approach

Problem Posing as a Learnable Activity

Proving general sentences in mathematics and justification of mathematical statements by learners of mathematics. The anthropomathematical studies

Using Student-Friendly Tasks to promote mathematical understanding in a middle school classroom

Using the graphic display calculator in solving some problems concerning limits of sequences and functions