The Human Variable in Teaching

The Human Variable in Teaching 2

Greg Kahn, GRAIN, for The Chronicle

Daryao Khatri (right), a physics professor at the U. of the District of Columbia, 
works with Marc’Quinn Davis, who knew little math when he started college.

Daryao S. Khatri noticed the young man, the one who walked in late. The professor did not know if he could solve basic math problems, or if he wanted to learn. Mr. Khatri knew just one thing: When he first looked at Marc’Quinn Davis, the young man looked away.

It was June 2007. Arriving at the University of the District of Columbia that morning, neither one was sure what the weeks ahead would bring. They were as different as odd and even, the physics