\input zb-basic \input zb-matheduc \iteman{ZMATH 2013e.00535} \itemau{Lamb, Lisa L.; Pierson Bishop, Jessica; Philipp, Randolph A.; Schappelle, Bonnie P.; Whitacre, Ian; Lewis, Mindy} \itemti{Developing symbol sense for the minus sign.} \itemso{Math. Teach. Middle Sch. 18, No. 1, 5-9 (2012).} \itemab Summary: Research on how students make sense of and use the minus sign indicates that students struggle to understand the multiple meanings of the minus sign. Teachers can support students in developing robust understanding of each interpretation of the minus sign, and associated symbol sense, so that they can move among the meanings and can recognize and use each meaning seamlessly. \itemrv{~} \itemcc{H23 H33 F43 E43} \itemut{notation; minus sign; meaning; understanding; concept formation; subtraction; opposite of; sign of a number; integers; negative numbers; number concepts; number sense; solving equations; manipulation of expressions; elementary algebra; learning problems; symbol sense} \itemli{doi:10.5951/mathteacmiddscho.18.1.0005 http://www.nctm.org/publications/article.aspx?id=33671} \end