K: Simplified rules, walking focus, teacher-led teams, short 8-10 min rounds, emphasis on sharing/turns
1st: Basic scoring intro, partner throws, 10-12 min, simple boundaries
2nd: Full rules with coaching spots, 12-15 min, introduce strategy huddles
3rd: Positions + defense concepts, 15-18 min, peer officiating
4th: Tournament format or full field, leadership rotations, 18-22 min, game analysis debrief