The Old Slavic Letters, New European Names project is one of the activities of the Erasmus+KA229 project "Combining Approaches in the Literature and Language Learning", C.A.L.L. C.A.L.L. is a three-year project between four partner high schools from Croatia, Turkey, Romania and North Macedonia. During the project, students will create spelling books for the Latin, Cyrillic and Glagolitic alphabets, create social and digital games with the theme of the letters, make objects in the shape of letters from various materials, participate in a joint quiz, create a joint spelling book, a book of games and a joint exhibition.