Table 2. Structure and content of the multimedia course.

	Tactics	Technique
Content	offensive and defensive behaviour in one-versus-one situations (duels)…..	Shooting, passing, ball control
Unit 1	written basic information, static illustrations, few ideal-typical video presentations, isolated viewpoint
Unit 2	repetition/summary of unit 1, animations, videos containing variable realisations, reflection in more complex situations
Unit 3	repetition/summary of unit 1 and 2, various videos representing different skill levels and also containing deficient realisations