Di Lonardo Burr, S.M., Douglas, H., Vorobeva, M. and Muldner, K. 2020. Refuting Misconceptions: Computer Tutors for Fraction Arithmetic. Journal of Numerical Cognition. 6, 3 (Dec. 2020), 355-377. DOI:https://doi.org/10.5964/jnc.v6i3.310.