Understanding rational numbers-obstacles for learners with and without mathematical learning difficulties

Obersteiner, A., Reiss, K., Van Dooren, W., & Van Hoof, J. (2019). Understanding rational numbers-obstacles for learners with and without mathematical learning difficulties. In International Handbook of Mathematical Learning Difficulties: From the Laboratory to the Classroom (pp. 581–594). Springer International Publishing. https://doi.org/10.1007/978-3-319-97148-3_34