Dan Kalman, Prof. Emeritus
Please use one of these links:
for my American
Security Math Problem, MD-DC-VA Spring
2019: pdf slides + Desmos Graph.
Slides from Newton
Cooling in the Attic, JMM 2019: pdf file or pptx file.
for materials from a presentation on Ellipses at Mathfest 2018.
from other talks and colloquia.