I didn't know much about the South Carolina State Museum before I went there, but I had taken my four kids (9,7,4, and 2) to EdVenture across the parking lot many times, so we decided to give it a shot. In the end, I think that the kids had as much, if not more fun at the State Museum as they ever had at the children's museum. Each of the exhibits had several "hands on" items that the kids could touch and learn from, which was great. They're interest level remained high during the entire 3 1/2 hours that we were there.
The website has pretty good information about the various exhibits, but not a lot of specifics about the special Secrets of the Maya exhibit that ends June 2013, so I thought I'd share my thoughts:
SECRETS OF THE MAYA
This is a temporary exhibit that closes June 2013. The cost of going through the exhibit is in addition to the normal ticket price to see the museum (even if you're a member). Overall, I didn't think it was worth the cost. There are many reproductions of Mayan artifacts, but very few actual artifacts. For the kids, they enjoyed playing with the modeling clay to make sculptures that they could then put on display, hosting a puppet show in the small puppet theaters, and attempting to draw Mayan cave drawings on a Fisher Price magnetic drawing board, but overall were a bit underwhelmed.