The visions of mathematics classrooms called for by current educational ref
orm efforts pose great challenges for kindergarten through Grade 12 schools
and teacher education programs. Although a number of colleges and universi
ties throughout the country are making changes in their teacher education p
rograms to reflect these reform recommendations, we have little systematic
information on the nature of these programs or their impact on prospective
teachers. These issues are of central concern in the study-Learning to Teac
h Secondary Mathematics in Two Reform-Based Teacher Education Programs-that
we draw on in this article. The article focuses on 1 preservice teacher's
(Ms. Savant) knowledge, beliefs, and practices related to proof, tasks, and
discourse. A situative perspective on cognition and components of teachers
' professional knowledge frame our research. We examined data on Ms. Savant
's experiences in her teacher education program to understand the influence
s of teacher education on her development as a mathematics teacher. This re
search indicates that Ms. Savant's teacher education experiences did make a
difference in her development as a teacher. Her mathematics methods course
provided a large collection of tasks, engaged her and her preservice colle
agues in discourse, and provided her with both formal and informal experien
ces with proof-all of these experiences reflecting reform-based visions of
mathematics classrooms. The situative perspective on cognition directed our
attention to issues of compatibility of goals and visions across the vario
us university and kindergarten through Grade 12 classroom settings, and it
helped us to understand why some aspects of reform-based pedagogy are more
easily learned than others: Why some ideas and practices learned as a stude
nt in the university setting are more easily transported to the novice teac
her's kindergarten through Grade 12 field setting. We conclude that compati
bility of these settings on several key dimensions is essential for the set
tings to reinforce each other's messages, and thus work in conjunction, rat
her than in opposition, to prepare reform-minded teachers.