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“Some of my best lessons were taught the day after one of these sessions.”

Teacher Courses

Our courses for teachers are intended to encourage and support excellent teaching of mathematics. The courses are led by highly experienced instructors recognized for their record of outstanding teaching. All courses address both content and methods, and include a wealth of problems and examples. The sessions combine lecture, workshop, and interactive classroom discussion.

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Spring 2019   top

Relations between Inradius, circumradius and exradii (Registration Closed)

When: April 13, 2019, 3:30pm – 5:30 pm
Where: NYU Courant Institute, 251 Mercer St (map). Room 101.
Instructor: David Hankin.
Fee: None!

There are well-known formulas for the inradius, circumradius, and exradii of a triangle. Relationships between these quantities are less familiar. In this presentation, various approaches to some of these less widely known relationships and ideas will be considered.

Please share this invitation with your colleagues! Note that this workshop is free, but registration is required as we expect to reach capacity.

David Hankin is a highly respected mathematics teacher whose distinguished career spanned four decades at the high school and college levels. In addition, he served as Mathematics Department Chair at Hunter College High School, Chair of the AIME (American Invitational Mathematics Examination), and is a prolific author of competition questions. Mr. Hankin was instrumental in the creation of New York Math Circle, where he taught until his retirement in 2017.

Past Courses

We had our first full course for teachers in Spring 2008. You can see the listing of past courses here.