Informatics in Schools. New Ideas in School Informatics 12th International Conference on Informatics in Schools: Situation, Evolution, and Perspectives, ISSEP 2019, Larnaca, Cyprus, November 18-20, 2019, Proceedings - Pozdniakov, Sergei N.; Pozdniakov, Sergei N.; Dagienė, Valentina; Dagienė, Valentina (Springer International Publishing : Imprint: Springer, 2019)