Section outline

    • Vlassis, J., Demonty, I. The role of algebraic thinking in dealing with negative numbers. ZDM Mathematics Education 54, 1243–1255 (2022). https://doi.org/10.1007/s11858-022-01402-1

    • Lisa L. Lamb, Jessica Pierson Bishop, Randolph A. Philipp, Bonnie P. Schappelle, Ian Whitacre, & Mindy Lewis. (2012). Developing Symbol Sense for the Minus Sign. Mathematics Teaching in the Middle School18(1), 5–9. https://doi.org/10.5951/mathteacmiddscho.18.1.0005

    • Joëlle Vlassis, Making sense of the minus sign or becoming flexible in ‘negativity’, Learning and InstructionVolume 14, Issue 5, 2004, Pages 469-484, https://doi.org/10.1016/j.learninstruc.2004.06.012.