For early childhood, the domain of geometry and spatial reasoning is an important area of mathematics learning. Unfortunately, geometry and spatial thinking are often ignored or minimized in early education. We build a case for the importance of geometry and spatial thinking, review research on professional development for these teachers, and…

The field of Computer Supported Collaborative Learning (CSCL) includes designers who emphasize effectiveness, measured via experiments, as well as designers who emphasize context and conduct qualitative research on teaching and learning practices. We conjectured that these two different emphases could be fruitful combined in a research and…

Proposes a model to help teachers become consumers and producers of research as an integral part of classroom instruction. The strategy begins with teachers' concerns and aims at helping them become more responsible for directing their own professional development. Suggests employment of the model in preservice teacher education. (TRS)