Students make strategic choices–and justify them–to solve a system of two linear equations.

Supplementary Materials

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    • Supplemental Materials (DOCX 107 KB)

Contributor Notes

Samuel Otten, ottensa@missouri.edu, is an assistant professor at the University of Missouri. He is interested in promoting secondary students' engagement in mathematical practices.

Andrew Otten, aotten@nvps.net, is a mathematics teacher at Northview High School in Grand Rapids, Michigan. He is interested in learning and creating new ways to provoke students' deep understanding.

(Corresponding author is Otten ottensa@missouri.edu)
(Corresponding author is Otten aotten@nvps.net)
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