death_place death_date home_town birth_place children birth_date spouse article_title education birth_name occupation
minneapolis , minnesota 21 june 2015 staten island , new york chicago , illinois margaret and catherine 1 january 1941 mary e. steen lynn steen
 undergraduate mathematics university : luther college -lrb- iowa -rrb- b.a. lynn arthur steen professor emeritus of mathematics
lynn steen

lynn arthur steen -lrb- january 1 , 1941 -- june 21 , 2015 -rrb- was an american mathematician who was a professor of mathematics at st. olaf college , northfield , minnesota in the u.s. .
he wrote numerous books and articles on the teaching of mathematics .
he was a past president of the mathematics association of america -lrb- maa -rrb- and served as chairman of the conference board of the mathematical sciences .
