Glaucio Messias <em>et al. </em>2018.
 Education 4.0 and 21st Century Skills: A Case Study with Robotics Activities in Classroom. In <em>Proceedings of the 29th Brazilian Symposium on Computers in Education</em>, October 29, 2018, Fortaleza/CE, Brasil. SBC, Porto Alegre, Brasil, 715-724. DOI: <a href="https://doi.org/10.5753/cbie.sbie.2018.715">https://doi.org/10.5753/cbie.sbie.2018.715</a>.