@article{article_874739, title={Investigation of Number Sense Strategies used by Primary School Teachers and Mathematics Teachers}, journal={Journal of Education, Theory and Practical Research}, volume={7}, pages={48–61}, year={2021}, author={Er, Zübeyde and Dinç Artut, Perihan}, keywords={Number Sense, Number Sense Strategies, Mathematics Teachers, Primary School teachers}, abstract={The present study aims to investigate the strategies that are used by mathematics teachers and primary school teachers in number sense problems. This study was designed as a case study, one of the qualitative research methods. The participants of the study consisted of 30 teachers, 15 of whom were mathematics teachers and 15 of whom were primary school teachers, working in Adana. The Number Sense Test was used as the data collection tool. The Number Sense Test consists of 25 items with five number sense components. The qualitative research analysis techniques were used in the analysis of the data obtained from the data collection tool. The strategies which the teachers use while they are solving the problems are classified as number sense-based strategy, partial number sense-based strategy, rule-based strategy and no explanation. The findings showed that 58.9% of the problem solutions obtained from mathematics teachers was based on number sense-based strategies, 28.8% of them on rule-based strategies, 32.8% of primary school teachers’ solutions was number sense-based strategies and 55.4% of them was rule-based strategies.}, number={1}, publisher={Sabri SİDEKLİ}