A branch of mathematics—combinatorics—is explored through counting problems.
Edited by Debra I. Johanning, debra.johanning@utoledo.edu. Readers are encouraged to submit manuscripts through http://mtms.msubmit.net.
Elise Lockwood, elise314@gmail.com, is a postdoctoral fellow at the University of Wisconsin-Madison. Her research interests focus on learning about students' ways of thinking about counting problems and discrete mathematics. More information can be found at combinatorial thinking.com.