The purpose of this study is to find out how the teachers in preschool work with mathematics. How educators working to promote children's mathematics learning and how educators visualize math work. How they plan, implement and document the work of mathematics. I also want to find out how legal guardians perceive their children's mathematics learning in preschool. I have chosen to do interviews with the educators and survey legal guardians to make visible the work of mathematics in kindergarten. I interviewed six teachers who work at both younger and older children department. I sent out 200 questionnaires to the caregivers at three preschool, but I only got 33 questionnaires back. The result of the study shows that the pedagogs works with mathematics continuously in pre-school together with the children, to promote the children's mathematics. Inquiring pedagogue with children, there the together research and study mathematic. The pedagogue works according to Vygotskij theory, the zone of proximal development; where children learns in interaction with other people. The result from the questionnaires shows that the caregivers stated that they didn't got any information regarding the children's mathematics development.