It was a series of workshops that were held on January 4, 5 and 6 in elementary schools in Semeljci, Selci Đakovački and Trnava, each day in a different school. Transportation and refreshments were provided as part of project "STEM - my education", which is implemented by Primary school of Josip Kozarac, Semeljci in partnership with Primary school of  J. J. Strossmayer, Trnava and Primary school Đakovočki Selci. The project was financed by funds of the financial mechanism of the European Economic Area and Norwegian financial mechanism.

     Students from 2nd to 8th grade participated in various workshops led by mathematics, physics and classroom teachers. Mathematical puzzles, integrals, mathematical football, cryptography, magic squares, mathematical octagons, sudoku, bar diagrams, unusual geometry, tangram, mathematical kangaroo and mathematical alias... the list is long, and the young "STEM-team" had fun and learned something more about mathematical vastness.