摘要：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 Eskiehir. 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.
关键词：Tessellation, van Hiele Geometric Thinking Level
