First of all, I really think this place charges an awful lot for admission. It seems unreasonable to expect families to dole out a small fortune for an outing. I guess, because of the cost, I expected really big BIG things. So, I ended up feeling a bit disappointed.
There are a lot of neat exhibits. I highly recommend if you are taking more than one child that you have at least two adults with you. It's really crazy in there and it'd be easy to lose a kid. I think my favorite exhibit was the water exhibit. Beware they can get wet!
I think part of what bothered me is that there really are many things to look at and explore but it would take a long, long time to wait in line and then take your time to enjoy everything.
I think it's worth checking out and if it's in your budget, go for it.