In recent years, the mathematics education research community has given increased focus to the use of cognitively demanding, challenging tasks and the demands placed on students and teachers by their use. In particular, there is evidence that a major issue is students' lack of persistence when working on such tasks. In this article, we report on…

This study investigated the effectiveness of using point-to-point videoconferencing for a 3-day professional development workshop of elementary school science teachers as part of the Science Co-op Project in rural Missouri. The intentions of this exploratory case study were to provide an overview of the program and to assess the degree to which…