The second Multiplier Event in Croatia took place on May 06, 2023 at the Electrotehnical and Traffical School Osijek in Osijek. The event was organized by members of the GAMMA team of the Electrotehnical and Traffical School Osijek in Osijek, with the two guest lecturers from the coordinating organization Department of Mathematics of the J. J. Strossmayer University of Osijek, Croatia. The participants of the meeting were 33 mathematics teachers from high schools and elementary schools. The teachers applied according to the public call. The teachers applied according to the public call.  

At this dissemination event, the teachers are introduced to GBL based on digital technology and they are instructed to apply the intellectual outputs of the GAMMA project. The agenda of the event included lectures on the GAMMA Handbook for teachers and the GAMMA template for teaching scenarios, as well as a short report on a case study, an introduction to the MaLT2 authoring system, training on how to create your own games using the ChoiCo authoring system for producing digital games, and workshops on the GAMMA games and the teaching scenarios created in the project. 

Teachers from different schools are trained to use the intellectual results developed through the project. They are also trained to produce their own teaching materials related to the project outputs and encouraged to use the GAMMA games and teaching scenario in their lessons.