Ключевые слова: aid, analysis, chalk, chalkboard, classroom, coaching, collaboration, communication, competitive, diagram, drawing, drills, educational, exercise, field, formation, game, illustrations, layout, learning, lines, method, methods, plan, play, player, positions, practice, preparation, session, setting, sports, sportsmanship, strategy, tactical, tactics, teamwork, timeless, tool, traditional, training, visual, zones,