The International Day of Mathematics (IDM) is a worldwide celebration. Each year on March 14 all countries will be invited to participate through activities for both students and the general public in schools, museums, libraries and other spaces. March 14 was chosen as the date for the IDM because it was already celebrated in many countries as Pi Day, based on the fact that some countries write it as 3/14 and the mathematical constant Pi is approximately 3.14. The International Day of Mathematics project is led by the International Mathematical Union with the support of numerous international and regional organizations from all over the world. It was proclamated by UNESCO on the 40th session of the General Conference, November 26, 2019. The first celebration was held on March 14, 2020.

This year, we will celebrate the International Day of Mathematics at Elementary School Sveti Matej, Viškovo. The celebration of the International Day of Mathematics was organized as part of the project SciMaG – Science&Math educational games from preschool to university, and the organizers and performers of the activity are Center of Technical Culture Rijeka, Faculty of Mathematics, University of Rijeka, Elementary School Sveti Matej Viškovo, Prva sušačka hrvatska gimnazija Rijeka.

The activities are:

- Utrka neposlušnih robota (Faculty of Mathematics, University of Rijeka)
- Igra: Matematika drugim riječima (Faculty of Mathematics, University of Rijeka
- Igre: Set, Spot it, Tatrix (Faculty of Mathematics, University of Rijeka)
- Složi i zaigraj sudoku za malene (Faculty of Mathematics, University of Rijeka)
- Kornjača igra sudoku (Faculty of Mathematics, University of Rijeka)
- Sudoku u koordinatnom sustavu (Faculty of Mathematics, University of Rijeka)
- Potraga za blagom u Pi ritmu (Faculty of Mathematics, University of Rijeka and Center of Technical Culture Rijeka)
- Cubetto igra Sudoku (Faculty of Mathematics, University of Rijeka and Center of Technical Culture Rijeka)
- Pčelica pleše u Pi ritmu (Faculty of Mathematics, University of Rijeka and Center of Technical Culture Rijeka)

Join the celebration of the International Day of Mathematics and publish your activities at https://www.idm314.org/. At the same address, you can see how IDM is celebrated in the world.