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Bright, G. W., Behr, M. J., Post, T. R., & Wachsmuth, I. (1988). Identifying fractions on number lines. Journal for Research in Mathematics Education, 19(3), 215.
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Kucian, K., Grond, U., Rotzer, S., Henzi, B., Schonmann, C., Plangger, F., ... & von Aster, M. (2011). Mental number line training in children with developmental dyscalculia. Neuroimage, 57(3), 782-795.
National Mathematics Advisory Panel. (2008). Foundations for success: The final report of the national mathematics advisory panel. U.S. Department of Education: Washington, DC.
Willis, J. (2006). Research-based strategies to ignite student learning. Alexandria, VA: ASCD.
Woods, D. M., Ketterlin Geller, L., & Basaraba, D. (2018). Number sense on the number line. Intervention__ in School and Clinic, 53(4), 229-236.
Woodward, J. (2006). Developing automaticity in multiplication facts: Integrating strategy instruction with timed practice drills. Learning Disability Quarterly, 29(4), 269-289.