Yuri Rosa et al. 2021. PC-Exchange: Proposal of Playful and Unplugged Tasks Applying the Computational Thinking Methodology. In Proceedings of the Brazilian Symposium on Computing Education, April 26, 2021, On-line, Brasil. SBC, Porto Alegre, Brasil, 227-236. DOI: https://doi.org/10.5753/educomp.2021.14489.