I am a first time Tee Ball coach. I had the same question. I found the best thing was to have a quick warm up (run bases twice) Then create three stations (10 min each): 1)Batting, rotate batter and fielders. 2) Fielding, roll, bounce, or throw ball to players based on skill 3) Throwing, focus on grip and stance. After all players have rotated thru have a scrimmage.