Sarah Marina Karamarkovich Teomara Rutherford Fraction Errors in a Digital Mathematics Environment: Latent Class and Transition Analysis. 158-188 2019 5 J. Numer. Cogn. 2 https://doi.org/10.5964/jnc.v5i2.150 db/journals/jnc/jnc5.html#KaramarkovichR19