Before I begin, there's the admission part. Admission is "suggested," meaning you don't have to pay the actual admission, but it’s recommended because it goes towards research, exhibits, etc. My friend and I were going to pay the student rate (if you have a student ID, you pay a discounted rate), but the guy we bought tickets from had a crush on us and let us pay, like, a dollar apiece. So flirt if need be.
I really like science and natural history museums, so it’s a very interesting place. Again, you will be searched before you enter, just like any place in NYC. My favorite part was the dinosaurs. I thought it was absolutely fascinating. I loved dinosaurs as a child and had never seen a dinosaur fossil before! Just so you know, there are some exhibits that are anatomically correct, and if you are one of those parents who do not feel their child is ready for that, avoid those sections. Other than that, it’s a great family outing!