Jaroslav Popelka, Ratko Pavlović. A COMPARISON OF DIFFERENT TEACHING APPROACHES AND THEIR IMPACT ON THE LEVEL OF THEORETICAL KNOWLEDGE OF VOLLEYBALL AMONG 13– 14-YEAR OLD PUPILS. SPORTSPA [Internet]. 2025 Apr. 24 [cited 2025 May 12];12(1). Available from: http://sportspa.ftos.untz.ba/index.php/sportspa/article/view/132