From Mike Braun:
I had Mr. Lawhon for two years: Algebra 2 (1971-1972), Trig (Fall 1972) and College Algebra (Spring 1973).
He followed the textbook, but discussed and assigned lessons by individual concepts instead of tackling an entire chapter at once.
I enjoyed his teaching style, so I continued to take math because he taught the "upper level" courses.
He worked the same problems he assigned to the class in his spiral notebooks.
A great teacher -- very low key and mild mannered. His classes were juniors and seniors, but he never had a discipline problem.