Get Seminar - January 29th, 2021


Transformational geometry, one part of transforming geometry instruction

Friday, January 29, 2021
11:00 am PT | 12:00 pm MT | 1:00 pm CT | 2:00 pm ET
Presenter: Henri Picciotto

Summary: The traditional high school suffers from ineffective pedagogy, a problematic approach to proof, and a rigid separation from other parts of the secondary math curriculum. Transformational geometry can help address those limitations: it can be used to bring in new approaches to teaching, broaden, and deepen the understanding of proof, and make connections with several other parts of mathematics. Unfortunately, bringing a transformational approach to schools is hampered by a lack of clarity and the weight of tradition.  Henri Picciotto will suggest some possibly useful guidelines to facilitate this transition, including what topics should be prioritized in preservice training.

Registration Closed

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.


Henri Picciotto is a math education consultant, retired from the classroom after 42 years of teaching at every level from counting to calculus. He is a leading authority on the use of manipulatives and geometric puzzles in secondary school. He is the author of Geometry Labs, a book of discussion-generating hands-on activities, and the co-author with George Hart of Zome Geometry, a guide to the exploration of polyhedra and much more. Henri shares his ideas about teaching, and much curriculum, on his Math Education Page and his Math Education Blog.