L.W.
You've gotten some really good advice, so I'll just add a couple of thoughts. Supervision is primary as others have mentioned. Daycare would be a good idea to help your pup learn to play nicely with others (assuming the facility is well run) as well as to give your pup a break and a chance to blow off some steam.
My last thought is that training is crucial, even a breed known to be relatively even-tempered with children must be trained. Not training your dog is not fair to your dog or to any member of your family. You all need to put the time in to help your dog understand safe boundaries and behaviors. Every member of the family, including your daughter need to be part of the training - a puppy class is a good start, but don't stop there, it would be like sending your children to kindergarden and then quiting.
Good luck!