Barbosa, A. & Vale, I. (2020). Math Trails through Digital Technology: An Experience with Pre-Service Teachers. In M. Ludwig, S.
Jablonski, A. Caldeira, & A. Moura (Eds.), Research on Outdoor STEM Education in the digiTal Age. Proceedings of the ROSETA Online
Conference in June 2020 (pp. 47-54). Münster: WTM. https://doi.org/10.37626/GA9783959871440.0.06