This bachelor’s thesis focuses on the matter of application of interdiscipli-nary relations during sport courses for primary schools. Synthesis of find-ings in this thesis includes theoretical resources needed for the creation of worksheets which are a suitable didactic tool for the fulfilment of this the-sis’s goal. Worksheets can serve as a tool for the application of interdisci-plinary relations of natural history and physical education during cross-country skiing sports courses, intended for the students of seventh and eighth grade in primary schools.