The museum is small, essentially most of one floor (history of Jordan) and half of another floor (special Petra exhibit). We had curators take us through in split group and saw some amazing examples of preserved stuff. Please don't touch, very little is behind glass.
I didn't take any photos of the coolest items in the museum, scraps of the Dead Sea Scrolls and the cut open segments of the copper scrolls (promising wealth and treasure to those who follow the directions held within... many have searched, none have found it). With a 1JD entrance fee, I'll go back and revisit.