The main issue of the program was mathematics related to other sciences and the gamification processes to make them more friendly and popular among children.4 children and 2 teachers from each country participated almost in every mobility (in some cases the number of students was higher). The first meeting was held in Italy. The hospitality of the children from the families was excellent. From the host country, a treasure hunt was organized for children with school-based problems in their everyday lives. The teams were mixed and the competition was intense. In the end whichever team had solved most was the winner. The children were very pleased with this activity. The same game took place in the city of Montesarco with other questions of course. The next action was the presentation of children's work. The theme was math and arts. Each country presented its work in the school's event room. The next day in the IT room the children competed in problem solving. Every country had created a problem. So each country had to solve 3 problems (of the other countries). The winner was the country that would solve them faster. In the end, each country exemplified the problem it had created. Then we measured the score and so we had a winner. We made interesting visits! Out of the city of Montesarchio, we went to Naples, Caserta, and in Pompeii. It was a great first meeting. The next meeting was scheduled for Sofia, Bulgaria. The treasure hunt took place in a huge park and was excellent because the students had to use algebra, geometry, imagination, speed and team spirit to get to the solution first. The following day the students presented their work on mathematics and sports. They then played a game that combined mathematics and sports.Children divided into groups first had to complete a sporting activity and then solve a puzzle. One of the actions that followed was a visit to an escape room with mathematical puzzles. Winner was the team who managed to escape in less time. The lesson in the new mathematics, physics, and computer classrooms of the school, as well as the printouts made by the 3D printer, was of great interest. We toured the city of Sofia, visited the beautiful Plovdiv and a monastery. The third visit was in our country . The theme was mathematics and new technologies. Students attended workshops on robotics and new technology applications with an emphasis on augmented reality. They presented their work on mathematics and new technologies at the school museum and their work on 5 great mathematicians from each country at the school. , they played in the treasure hunt '' escape from the city '' (created by the teachers of the program) which at the same time forced them to tour the old town of Corfu. Children divided into groups by country played the kahoot game created with questions from the presentations that were made and were amazing. The visit ended with city tours, tourist attractions, museums and the National Gallery. The fourth and final meeting took place in Gran Canaria, Spain. We started with a treasure hunt in Guia. A photo contest followed in Agate. The next day, the children presented their work on mathematics and logic games, followed by a workshop for the creation of traditional clay stamps. excursions to tourist attractions and participation of children in water activities. On the last day, each country presented the table game they created and then the children played in groups. One of the funniest moments of every meeting was lunch time, where kids and teachers like old friends ate, chatted and had fun. The meetings always ended with a farewell party where feelings of joy and sadness were evidently mixed. The most difficult moment was that of farewell. The tears on the faces of the children were a tremendous moral reward for us and a testament that the program will stay alive in the memories of children forever.Of course, in addition to the memories, the program has left its mark on each of the schools involved! Erasmus corners, photos ,creations, board games ,math map, kahoot game and so on.