Rosemarie T. Truglio is the senior vice president of curriculum and content at Sesame Workshop, where she is responsible for the development of the interdisciplinary curriculum on which "Sesame Street" is based, and oversees content development across platforms such as television, publishing, toys, home video, and theme park activities.…

This study examined the pedagogical content knowledge of pre-service preschool teachers on quantity concepts in terms of children's mistakes. A total of 94 pre-service teachers who were attending a teacher training program at a state university, in Turkey, participated this study. 52 of them were second-year, and 42 of them were third-year…

There is widespread agreement that further research is needed in order to identify afterschool program characteristics useful for understanding why some programs are more successful than others. The bulk of recommendations put forth by researchers, practitioners and policy makers focus on observable characteristics of the afterschool setting as a…

In an online graduate-level early childhood education course, the authors sought to playfully disrupt and transform educators' conceptions of children's "dark play," as provoked by contemporary popular culture. Embracing the imaginative potential of darkness and liminality, the course participants problematized and expanded their…

In this paper we report the results of a study which investigated the affordances of multi-user virtual environments (MUVEs) for collaborative learning from a design perspective. Utilizing a mixed methods approach, we conducted a comparative study of the effect of varying representational and interactional design features on a collaborative design…