Frozen custard recipes are the starting point for students to derive and explain a method for multiplying matrices.

Contributor Notes

Allyson Hallman-Thrasher, hallman@ohio.edu, a former high school mathematics teacher, is an assistant professor of mathematics education at Ohio University in Athens, Ohio. Her work focuses on supporting K–12 teachers in learning to use mathematical discussion to develop students' understanding of mathematics.

Kevin E. Dael, kdael@alexanderschools.org, has taught math, music, and computer courses for twenty-one years in Ohio and Alaska. He currently teaches mathematics at Alexander High School in Albany, Ohio, where he focuses on using technology to engage students and implementing professional development for teachers.

Erin T. Litchfield, elitchfield@alexanderschools.org, is a 2012 Woodrow Wilson Teaching Fellow in her third year of teaching. She teaches science and mathematics at Alexander High School, and is interested in task design and using technology to enhance mathematics instruction.

(Corresponding author is Hallman-Thrasher hallman@ohio.edu)
(Corresponding author is Dael kdael@alexanderschools.org)
(Corresponding author is Litchfield elitchfield@alexanderschools.org)
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