I wouldn’t waste your time trying to teach the squat or ol’s. I would put most of your efforts into the following:
1: Solid 30min warm-up
2: Solid cool-down
3: Low vol-Short distance sprints 10-30m
4: MB throws
5: Lower body strength training: lunges, steups, gh, rev hypers, and maybe trap bar deadlifts. Post chain/core work!!
With my young ballers we normally start them out with 100 reps of hypers or gh as a warm-up for the first 6 weeks. I found high vol post chain work+solid warm-up activity makes teaching the squat easier. For example:
1.GHR: 4x10
2.Reverse Hypers: 4x10
3.Erect Bends: 4x10
4.Barbell Kneel Russian Twists: 4x10