The opening of the exhibition on December 7th 2017, will be as a part of yearly popular mathematical event “Evening of mathematics” (http://matematika.hr/vecermatematike), held in Split. The Evening is held in many cities throught Croatia. In each city it attracts hundreds of visitors (elementary and high school students, students, teachers etc.). Main goal of the event is popularization of math via different workshops, lectures, games, exhibitions etc.