In May and June 2022, the main study in Cyprus was conducted. Three schools and 131 Grade 1 students were involved. The three schools were: Deftera Primary School, E’ Lakatamia Primary School (Agiou Ioanni Chrysostomou) and D’ Primary School Aradippou (Agiou Fanouriou). The Cypriot team collected data from 130 children. The students worked, among others, on the DIDUNAS ET-Tool and the DIDUNAS app. The students‘ teachers were asked for feedback on the DIDUNAS app. Their views were positive and their suggestions are incorporated in the new version of the app. Teachers are also anticipating the teaching materials, which are being developed by the project members.