NBA Charge Foul rules

[ATXCoach]

I am the worst kind of coach (an AAU / summer league coach) . I coach girls, and my current team will be 8th and 9th graders.

To go along with the flopping talk previously in this thread - I hate it, I don't coach it, and I hate when it gets rewarded at any level. I teach my bigs to slide over get their arms up and to be a brick wall. Correct me if I am wrong, but as long as they get there first (and the shooter isn't in the air, etc.), then this isn't a foul on the defender. Unfortunately, my bigs are still relatively young and are more like a paper wall. What I mean is that the contact gets them in the stomach or chest, and they end up bending at the hip a little, arms come forward, and they get called for the foul. (the calls are not blocking fouls, they are hacking fouls)

I am at a loss because I feel there are occasions when if they would scream and fall backwards then they would get the charge call, but I won't ever teach that. I feel the defender is set, the offensive player contacts the defensive player, then the defensive player reacts to the contact. It seems like a charge to me.

Obviously I am not saying this happens every time and I know there are times when they get block happy and miss - I get that. Just looking for a rules explanation so I can tweak how I coach, if i need to.

Thanks in advance