As a retired teacher, I must say that I am glad I don't have to teach in these circumstances.
I agree teachers are unlikely to be wearing masks and gloves, but they could do so. Any competent teacher could make a game of it, so the smaller children wouldn't be scared. " we're in outer space today, children, so we need masks".
Older children will understand the necessity and not be scared.
I too doubt that kindergartens can enforce the social distancing rules, schools should be better able to do so, after all children are sitting down most of the time at places carefully spaced to conform to regulations.
Obviously, no group work is possible, nor can a teacher stand at a pupil's side to explain anything. Gym lessons become very difficult, indeed, unless all you do is let children run or jump suitably spaced.