“…Interventions designed to improve fraction magnitude understanding have significantly improved performance across a variety of other fractions skills and concepts for students with, or at risk of, MD (e.g., Flores, Hinton, & Meyer, 2018; Fuchs et al, 2013). Using number line representations (i.e., measurement or length models) as the central visual representation (VR) of fractions is a common feature of successful fractions interventions focused on improving students’ magnitude understanding (e.g., Flores et al, 2018; Fuchs et al, 2013). Number lines are an important component of fractions instruction because number lines allow for clear VR of the concepts of equal, smaller, and bigger, and as a result, reinforce the idea that fractions are numbers with magnitude.…”