*Geometry: A Transformation Approach (GATA)*to his continuing activities today. My panel was supposed to discuss his work on … Continue Reading ››

# Tribute to Zalman Usiskin

On November 6 I had the honor of being one of the panelists in a Symposium Honoring Zalman Usiskin, held to honor Zal’s many years of contributions to mathematics education, from his groundbreaking 1971 textbook