Mackenzie's research focuses on classroom assessment in mathematics education, with particular attention to how assessment practices shape students’ learning experiences, attitudes, and emotions toward mathematics. She holds a Master of Arts in Child Study and Education from OISE at the University of Toronto and a Bachelor of Arts in Psychology and Disability Studies from Western University.

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Mackenzie is an Ontario Certified Teacher with experience teaching in elementary classrooms and supporting undergraduate students and teacher candidates. Her research interests include classroom assessment, formative assessment, mathematics education, mathematics anxiety and attitudes, and the ways assessment practices can support positive and equitable learning experiences for students.