Purpose: The purpose of this study was through qualitative interviews with six pre-school teachers and to get a deeper knowledge of how pre-school teachers relate and think about the gender perspective in the free play. We also wanted to get an idea on how they handle material in the relation to gender. Issues: How does pre-school teachers conduct themselves to gender towards children and their views on gender development over the years? What do pre-school teachers have for ideas about gender in the free play in activity? How do they handle gender coded material in the activity, their views about gender coded materials and unisex material? Method: We have used a phenomenological science approach which is an inspiration to a qualitative research. Qualitative interviews has helped us to get a deeper information about our study.   Theory: We have used Judith Butler's gender theory to explain how the concept of gender and sex are present as the basic theoretical tool in feminist theory. Results: The conclusion of our study is that pre-school teachers have different ways of conducting themselves to children in the schools. We have also noticed that pre-school teachers at the respective pre-schools are aware that they should relate to both girls and boys in similar ways and make positive impact on children. They also had a different idea of ​​what a free play is and how they use free play for children's development and learning.  Pre-school teachers in the respective pre-schools also had different ways of handling gender coded materials and unisex materials.