In our work in teacher education and professional development, we aim to help teachers to learn to participate in, and create, classroom ecologies that support students' learning. In this article we focus on the challenges of developing a classroom ecology that provides mathematical sustenance for students. We pay particular attention to the ways…

Suggests that trivialized versions of constructivism are promulgated due to misunderstandings of vocabulary adopted by its advocates. Discusses specifics of frustrations in an effort to communicate the insights and implications of radical and social constructivist theories to preservice and practicing teachers. Presents a classroom episode to show…