Is this sentence well-formed?
Hello dear native speakers
Children playing in the school playground, although under their teacher's supervision, hit each other. Liz, the smallest of them, fell down abd hurt herself badly.
1)Am I using the word "although" correctly here? Or should I say " despite their teacher's supervision"?
2) should I use " the" before the word "children" or it can work better without "the"?
Thanks a lot