Dr. Bonnie H. Litwiller, 74, of Morton, Illinois, died at 11:40 a.m., Friday, January 27, 2012, at her home. She was born February 14, 1937, in Morton, Illinois, to Marion and Helen (Huette) Litwiller. Surviving are five first cousins. She was preceded in death by her parents. Bonnie received her B. S./M. S. degrees from Illinois State University in Normal. She received her Math Ed. D. from Indiana University. She first taught seven years at Richwoods High School in Peoria, Illinois. Bonnie later became a professor of mathematics at the University of Northern Iowa in Cedar Falls, Iowa, retiring in 2003. Bonnie was a member of Delta Kappa Gamma, Phi Delta Kappa, and Kappa Mu Epsilon, Lambda Theta, and Kappa Delta Pi. She also was a member of the National Council of Teachers of Mathematics, Mathematics Association of America, and the School Science and Mathematics Association. For the past four years, Bonnie was a member of the P. E. O. Sisterhood. In 2004, she received the Indiana University School of Education Distinguished Alumni award. Bonnie co-authored more than one thousand journal articles, published four books, edited twenty-six books for the National Council of Teachers of Mathematics, and gave more than two hundred presentations. She was awarded the 2003 Iowa Council of Teachers of Mathematics Lifetime Achievement award, the 1995 University of Northern Iowa Outstanding Service award, the 1993 Regents Award for Excellence from the Iowa Board of Regents, and the 1982 Illinois State University Alumni Achievement award. Bonnie was a member of the Community United Church of Christ in Morton, where a celebration of life service took place Tuesday, January 31, 2012, with the Reverend Jeff Johnston officiating. Burial of cremated remains will be at a later date. Ludwig Mortuary in Morton is handling arrangements. Memorials may be made to the Department of Mathematics, Illinois State University, Campus Box 4520, Normal, Illinois 61790-4520, or the Community United Church of Christ, 300 N. Main Street, Morton, Illinois 61550.
Copyright Waterloo Courier on-line edition; downloaded February 14, 2012.