3. Data collection tools
Boehm Test of Basic Concept (BOEHM-3, 2000): The test was developed by Ann. E. Boehm and Boehm-3, 2000 revised version was used in this study (Boehm, 2001). The test can be applied to all children from preschool to primary school second grade (60-96 months). It consists of small booklets which include 50 basic concepts and aims to assess children’s level of qualitative, spatial, quantitative concepts related to their language and cognitive development