Purpose: This paper examines how mathematics teacher educators (MTEs) learn to enact equitable mathematics instruction using technology through lesson study (LS). Design/methodology/approach: A LS team with three MTEs conducted three iterations of LS on teaching the Pythagorean Theorem in an in-person, technology-mediated environment. Many forms…

This research report describes a Learning Trajectory-based Curricular Design project that engaged teachers and coaches in the design and implementation process. As the project team, we focused on deepening teacher designers' understanding of the learning trajectory (LT) while situating student learning along a continuum to advance student…

Lesson Study is a professional development program, which engages teachers in a collaborative and long-term lesson planning process aimed at improving a single or a group of lessons. In the process, teachers may feel that they are offered three different types of support: social, emotional, and instructional. The purpose of this study was to…