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=== Literatur ===
 
=== Literatur ===
 
<!-- ggf. Literaturangaben -->
 
<!-- ggf. Literaturangaben -->
Gravemeijer, K.P.E. [1996]: Developing realistic mathematics education. Utrecht: Freudenthal In-stitut.
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Gravemeijer, K.P.E. [1996]: Developing realistic mathematics education. Utrecht: Freudenthal Institut.
    
=== Links ===
 
=== Links ===