Lori MacKenzie is an experienced mathematics leader and professional learning facilitator dedicated to improving instructional practice and student thinking in K–12 classrooms. She currently serves as a Math Specialist at Clackamas Education Service District, where she partners with teachers, coaches, and administrators to design meaningful professional learning focused on equitable, high-impact mathematics instruction. Lori is a frequent presenter and workshop leader, including work centered on Building Thinking Classrooms, supporting productive mathematical discourse, and designing tasks that promote deep thinking. Known for her practical approach and deep respect for educators’ expertise, she blends research-based strategies with classroom realities to support lasting instructional change. Lori is passionate about creating mathematics classrooms where all students feel a strong sense of belonging and are valued as capable thinkers.