Haataja, Eeva, Miika Toivanen, Anu Laine, and Markku S. Hannula. 2019. “Teacher-Student Eye Contact During Scaffolding Collaborative Mathematical Problem-Solving”. LUMAT: International Journal on Math, Science and Technology Education 7 (2):9–26. https://doi.org/10.31129/LUMAT.7.2.350.