GeT Seminar - April 26, 2024


How Understanding Geometric Transformations Helps Students Improve Their Problem Solving

Friday, April 26th, 2024
11:00 am PT | 12:00 pm MT | 1:00 pm CT | 2:00 pm ET
Presenter: Patrick Callahan


The above item from the 2007 NAEP was one of the most difficult. Why was it so difficult? What are some of the challenges students have connecting geometry and algebra? We will explore geometric transformations in school mathematics and analyze how student thinking can evolve from informal experiential definitions and strategies into more robust formal approaches. We will investigate how students can apply geometric transformations to be more successful in solving geometric problems.

Registration Open: Closes April 24th

Duration: 60 minutes

Format: Online seminar via Zoom web meeting software with questions and discussion. Detailed instructions for joining the seminar will be emailed to registered participants.



Patrick Callahan has worked in the fields of mathematics and mathematics education for over 30 years. He has a PhD in Mathematics with a research focus on Low Dimensional Geometry and Topology, in particular three-manifolds and knot theory. Callahan was an R. H. Bing Fellow at the University of Texas Austin. 

In 2001 Callahan joined the University of California Office of the President to help oversee systemwide mathematics programs to support and prepare teachers. In 2007 Callahan became the Executive Director of the CalTeach program and oversaw the development of mathematics and science teacher preparation programs at every UC campus.

Callahan is the founder and CEO of Math ANEX, an asset-based assessment company focused on understanding students’ mathematical thinking.