IT security in secondary CS education: is it missing in today's curricula? A qualitative comparison. - Manuel Riel; Ralf Romeike (WiPSCE, 2020)

3D Print your Artifacts - 3D Turtle Geometry as an Introduction to Programming. - Manuel Riel; Ralf Romeike (EDUCON, 2021)

Expertenmeinungen über Bildung zur IT-Sicherheit: Was jeder Mensch wissen sollte! - Ulrike Schott-Maire; Manuel Riel; Ralf Romeike (INFOS, 2021)