The purpose of the study was to determine the effect of problem-based learning (PBL) on critical thinking ability and content knowledge among selected secondary agriculture students in Missouri. The study employed a quasi-experimental, non-equivalent comparison group design. The treatment consisted of two instructional strategies: problem-based…

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…