Let's celebrate π day all together on March 14th 2023 ! Through this project we want to show all the beauty of mathematics and its application in life. All participants in the project will be introduced to the number pi and its application. All schools celebrate Pi Day through various activities, which would be combined in the project itself. The project would run throughout the school year. By March, they would prepare materials, exchange experiences, etc. After the celebration of Pi Day, evaluations of the implemented activities would follow. They would apply the gained experiences in order to improve their general mathematical knowledge and solve mathematical problems more easily. The project is a continuation of last year's successful project and cooperation between schools