Di Lonardo Burr, Sabrina M., Heather Douglas, Maria Vorobeva, and Kasia Muldner. “Refuting Misconceptions: Computer Tutors for Fraction Arithmetic”. Journal of Numerical Cognition 6, no. 3 (December 3, 2020): 355-377. Accessed April 11, 2021. https://jnc.psychopen.eu/index.php/jnc/article/view/5921.