This site showcases a collection of "Chalk-Talks." A Chalk-Talk is a video podcast of a math or science problem.
Each Chalk-Talk at this site has been produced twice. Once in English and once in Spanish.
Click on the name of the problem in the left column to see and hear the Chalk-Talks.
These have been produced by Kristin Radermacher at the Institute for Innovations in Undergraduate Research and Learning, Robert Hoar director.