Determining Early Mathematical Reasoning Skills

This study aimed to determine the mathematical reasoning skills of children in the area of Measurement and Data Analysis-Probability. First, Evaluation Instrument for the Early Mathematical Reasoning Skills is developed, its validity and reliability is performed. Furthermore, variables such as the effect of child gender, age, institution attended and part/full time attendance to the institution, total duration of preschool attendance as well as educational background of their parents were analyzed. The study group is composed of randomly selected 204 children of typical development in x at the age of 60-74 months attending dependent and independent kindergarten, private preschools, daycare centers and kindergartens of Ministry of National Education. Data were collected using Evaluation Instrument for the Early Mathematical Reasoning Skills that is type of holistic rubric and Child Information Form that was developed by the researcher. The instrument developed was found to be reliable and valid. No significant difference was found between the scores of reasoning areas and types of boys and girls.