Technical schools from Sweden - Vaggeryd, Czech Republic - Pardubice and Slovakia - Prešov are focused on teaching IT subjects notably 3D programming, modelling, electronics, robotics. They are also well equipped with needed 3D equipment. Partners decided to exploit these conditions and create rehabilitation aids for handicapped children which became the main objective of the Erasmus KA 229+ project. Students´ teams made not only 9 planned but 14 aids (SK 6, SE 3, CZ 5). Involved students learned/practised needed knowledge not only in school IT subjects but they became highly motivated to make aids on the best level and studied new programmes on their own. This approach became decisive factor during SARS CoV epidemic when schools were closed and students could get methodical teachers help online only. Even in this period teams completed highly sophisticated electronic aids above the plan. Since all participants intensively communicated via digital means, personally during LTTAs, studied English materials they deepened English language skills well. During LTTAs they also learned basic expressions of partners´ languages. LTTAs belong to the most intensive tool of cooperation, exchange of professional experience, learning partners´ culture, lifestyle. Students cooperated in transnational teams, completed planned aids, underwent lectures and practiced work with 3D programmes, 3D printer, Arduino, sensors and others. They also made quality videos about the mobility, about an aid making and projected presentations about their countries, the previous mobility. Hosts prepared excursions to companies with robotic production (SE, CZ), sightseeing, ethnographic trips.Unfortunately, the last mobility prepared in CZ had to be cancelled because of epidemic and could not be arranged even if the project implementation was extended by one year. Partners used project extension for making aids above the plan, they communicated online, delivered aids to sanatorium in their country only but the whole programme of the last mobility was impossible to complete.Between mobility students deepened knowledge needed for aids completing, created prototypes of planned aids and verified them in sanatoriums, improved them in compliance with doctors suggestions. Attention was devoted to dissemination. Participants made presentations, videos about the mobility and projected them in school classes, at parents meeting, at school Open Door, in case they were arranged. Articles were published on school websites, school news, local press (CZ, SE). You tube, also roll ups were displayed in schools. RESULTSAll planned results were completed. Each team made labyrinths operated by hands, by legs and sophisticated electronic aids run by programmes - robotic glove, tractor reacting on the wrist movement (CZ), 3D labyrinth (SK). This demanded deep students´ knowledge of electrical circuits, programming, 3D modelling, 3D printing, assembling, use of Bluetooth communication. Description of made aids has been published on the web https://3dschoolaids.eu/models.Participating students created electronic, also speaking dictionary in the programming language Java. It can be used by mobile phones. Teachers made E-L introduction to Arduino. Dissemination means were created by students as well: instruction video about an aid creating, videos and presentations about each LTTA, roll up.All project results, its implementation is recorded on the project web made by the student: http://www.3daidsforhandicappedchildren.eu LONGER TERM BENEFITSMade aids will be used for rehabilitation in sanatoriums in partners towns which is going to offer them to similar institutions. Web with aids can be used as the instruction how to complete other aids. Students who made aids improved their knowledge which was evaluated well while passing maturita exam. They successfully passed entrance exam to university and they are well prepared for the following studies. Younger team members have made the core of students realizing the following Erasmus project “Visual Aids to Make Learning/Teaching Easier”.