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Jeffrey A. Grabhorn
Jeffrey A. Grabhorn
Portland State University
Psychology
Sociology
Calculus
Mathematics education
multiplicative reasoning
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Working Group: Complex connections: reimagining units construction and coordination
2020
Beth L. MacDonald
Steven Boyce
Cameron Byerley
Diana L. Moss
Claudia Bertolone-Smith
Jeffrey A. Grabhorn
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Relating students’ units coordinating and calculus readiness
2020
Mathematical Thinking and Learning
Steven Boyce
Jeffrey A. Grabhorn
Cameron Byerley
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Constructing rates of change through a units coordinating lens: The story of Rick
2020
Jeffrey A. Grabhorn
Steven Boyce
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An invitation to conversation: addressing the limitations of graphical tasks for assessing covariational reasoning
2020
Brady A. Tyburski
Cameron Byerley
Steven Boyce
Jeffrey A. Grabhorn
Christopher Orlando Roman
Kevin C. Moore
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