Degree

PhD in Mathematics Education

State University of New York at Buffalo

MS in Mathematics Leadership

Bank Street College of Education

MS in Secondary Education/Math

City University of New York Queens College

BS in Mathematics

State University of New York at Albany

Published Works

• Koester, I. M. (2025). Productive Struggle in a Secondary Mathematics Education Program. (). Emerald Publishing.
• Koester, I. M. (2024). Mathematics Intervention Toolkit. , https://www.cde.state.co.us/comath/math-toolkits
• Johnson, M. J., Konuk, N., Koester, I. M. . Johnson, Janelle; Konuk, Nursen; & Koester, Mark. (Accepted). “STEM Collaborations: Building Interdisciplinary Collaboration with Lesson Study at an Urban Commuter University.. (). Taylor & Francis/Routledge.
• Koester, I. M. . Lesson Study with Preservice Secondary Math Teachers. (). .
• Koester, I. M. . Specialized Content Knowledge for Teachers of Mathematics. Colorado Mathematics Teacher.
• Koester, I. M. (2015). Embracing Mathematics. ,
• Bernhardt, E. P., Koester, I. M. (2015). Preparing mentors: Professional development to support clinical practice. . The Field Experience Journal, 15(1), 37-57. .
• Dollard, D. C., Koester, I. M., Corash, N. D. . Using Role-play to Focus a Teaching Methods Course on Practice. Action in Teacher Education.

Research Interests

Grading for growth

Teaching Interests

Teaching mathematics for sense-making and reasoning
Lesson Study
History of Math

Office Hours

Spring 2026

T TH 9:15-9:45, 12:00-12:30, 1:45-2:45pm
W (Virtual): 12:00-1:00pm
Office: SI 1038