Conceptual, connected mathematics: the path from teacher learning to classroom practice

Many education systems aim to support teachers in moving toward conceptually oriented mathematics instruction. The 2023 California Mathematics Framework provides one example of this effort by organizing standards around big ideas and emphasizing mathematical connections. In this study, we report on an early investigation of teachers’ learning about, and efforts to enact, the framework’s big ideas approach. We followed a cohort of elementary teachers who participated in a year-long professional learning fellowship. Drawing on multiple qualitative data sources, we examine the affordances and constraints teachers experienced as they learned to teach mathematics conceptually through big ideas, as well as the ways that the framework's conceptual structure supported their instructional decision-making. Teachers reported meaningful shifts in their teaching, which they attributed to increased student engagement, a sense of instructional freedom, and growing confidence in themselves as mathematical thinkers. Classroom observations corroborated these reported shifts by documenting teachers' enactment of key features of conceptual mathematics instruction. At the same time, teachers identified important constraints, particularly tensions between conceptual teaching and procedural district assessment systems. Across teachers, the big ideas approach provided a shared conceptual structure for organizing instruction around connected mathematical ideas while supporting teachers’ professional judgment in how those ideas were enacted in classrooms. To illustrate variation in teachers’ experiences, we present four cases representing different trajectories of learning and enactment. We conclude with implications for the design of professional learning and the use of coherent conceptual frameworks to support teachers' learning and instructional decision-making.