Ricardo Alexandre Peixoto de Queirós, Mário Paulo Teixeira Pinto: 4th International Computer Programming Education Conference, ICPEC 2023, Vila do Conde, Portugal, June 26-28, 2023. OASIcs 112, Schloss Dagstuhl - Leibniz-Zentrum für Informatik 2023, ISBN 978-3-95977-290-7