Welcome to NM, Austin (you may have left by now)!
In Albq-EXPLORA!, Albq Zoo, Aquarium & Biopark (these 3 have one entrance fee and don't miss the biopark for the age of your son!), NM Museum of Natural History & Science, Rio Grande Nature Center, International Balloon Museum (hot air balloons), volcanoes/Petroglyph National Monument, UNM's Museum of Indian something, NM Museum of History and Art? (great conquistador armor & weaponry), Sandia Tram, etc. Hope you saw some of those.
North of Albuquerque is Bandolier National Monument (go see the Valles Caldera, Jemez Pueblo, etc.) which is close to Los Alamos where the Bradbury Science Museum is located (rivals the Nuclear Museum!)