Determining the Fifth Grade Students van Hiele Geometric Thinking Levels in TessellationÇiğdem KILIÇ,Nilüfer Yavuzsoy KÖSE,Dilek TANIŞLI,Aynur ÖZDAŞ. Abstract | | | | This research has been conducted to determine fifth grade students van Hiele geometric thinking levels in tessellation. The research was conducted in a primary school in Eskişehir. 9 fifth grade students were chosen as participants. Data were collected through clinical interviews. In data analysis descriptor code key, which is similar to a key code, developed by Callingham (2004) were used. As a result, it was obtained that the fifth grade students van Hiele geometric thinking levels in tessellation are visual and analytic. Besides, it was determined that there is a relation between students mathematical achievement and van Hiele geometric thinking levels in tessellation.
Key words: Tessellation, van Hiele Geometric Thinking Level
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