A circle activity promotes students' understanding of probability.
Edited by Trena Wilkerson, trena_wilkerson@baylor.edu, Baylor University, Waco, Texas. Readers are encouraged to submit manuscripts through http://mtms.msubmit.net.
Diane S. Dowd, ddowd@ewu.edu, teaches preservice elementary teachers and middle school math teachers at Eastern Washington University in Cheney. A favorite topic of hers is operations on rational numbers and teachers' and students' understanding of these operations.