Y. Rosa <em>et al.</em>" PC-Exchange: Proposal of Playful and Unplugged Tasks Applying the Computational Thinking Methodology", in <em>Proceedings of the Brazilian Symposium on Computing Education</em>, On-line, 2021, pp. 227-236, doi: <a href="https://doi.org/10.5753/educomp.2021.14489">https://doi.org/10.5753/educomp.2021.14489</a>.