Park City Mathematics Institute
Implementing Lesson Study
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What is a Solution via Skiers and Snowboarders
Brynja Kohler- Coordinator*, Vicki Lyons- Assistant, Pedro Acosta, William Day, Mary Gruber, Bushra Makiya, Karen Petsche, Jocelyn Smyth, Thomas Taney, David Thomas, Betul Zenginobuz
The Lesson Study working group conducted a Japanese-style lesson study in 2½-weeks of close collaboration. We taught our public lesson to Algebra 2 students from the Winter Sports High School in Park City. That class was starting a unit on systems of equations, so we chose to teach a lesson concerning the conceptual underpinnings of solving any system of equations. Our lesson aim was to first assess student understanding of the concept of a solution to an equation, and then develop their concept of a solution to a system of equations. An additional goal was for students to begin to develop at least one method to represent and solve a system of linear equations systematically (an algebraic, graphical, or tabular method). We worked together to improve our practice incorporating group-worthy tasks, student accountability for their learning, and reasoning-based class discussions into the lesson.

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IAS/Park City Mathematics Institute is an outreach program of the Institute for Advanced Study, 1 Einstein Drive, Princeton, NJ 08540
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This material is based upon work supported by the National Science Foundation under DMS-0940733 and DMS-1441467. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.