During more than ten years we have been educating preservice preschool teacher students with early childhood education and at least three years of working experience from preschool. The studies give the students possibilities to use and connect their practical knowledge with theoretical studies in order to become preschool teachers. Large parts are self-studies, individually or in groups, using textbooks, films and other web-based material while they are working in preschool and only have lectures and exercises one day each week at the university campus. On the third semester, a 10 weeks course in science and technology is included. During this they write four reflections about exercises, lectures and theories from campus including how they shall use their knowledge at work. Here the fourth reflection about evolutionary theories is analysed. Instead of lectures or exercises about evolution textbooks, educational films and articles from newspapers were included to be used for reflections, and also gave comments on their student peers. These students showed a high level of professional experience but they were not aware of how to use their experience to understand patterns and phenomena in nature. The written reflections were assessed by using the quality markers 4R´s of Doll’s (Relations, Recursion, Richness and Rigor). The assessment was focused on use of evolutionary theories and if they gave comments on their experience working with children. The results show that many students used the theories correctly. Many also related to important issues that should be brought up in preschool. In general, the students used their previous experiences in order to construct their own, reasonable, views of the theory of evolution.