Research on how students make sense of and use the minus sign indicates that students struggle to understand the multiple meanings of this symbol. Teachers can support students in developing a robust understanding of each interpretation.
Edited by Debra I. Johanning, email@example.com. Readers are encouraged to submit manuscripts through http://mtms.msubmit.net.
*Lisa L. Lamb, Lisa.Lamb@sdsu.edu; Jessica Pierson Bishop, firstname.lastname@example.org; Randolph A. Philipp, email@example.com; Bonnie P. Schappelle, firstname.lastname@example.org; Ian Whitacre, email@example.com; and Mindy Lewis, firstname.lastname@example.org, work together at San Diego State University to investigate grades K–12 students' conceptions of negative numbers.
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