1. School of Education, Department of Education and Pedagogy, University of Iceland, Reykjavik, Iceland
2. Department of Sport, Food and Natural Sciences, Western Norway University of Applied Sciences , Bergen, Norway
3. Department of Early Childhood and Social Education , University College Copenhagen , Copenhagen, Denmark
4. Åbo Akademi University, Vaasa, Finland, Faculty of Education and Welfare studies, Department: Early Childhood Education, Vaasa, Finland
5. Faculty of Education, Department of Early Years Education, Kristianstad University, Kristianstad, Sweden
6. Norwegian Centre for Science Education, University of Oslo, Oslo, Norway