Eh, it's a good lesson to teach your kids, but blending educational facts about the other potential moons in the universe with the mythical world of Pandora will just confuse them too much... hell, it even confuses me. I recommend that you take them to the Kennedy Space Center if you want them to learn about other moons. If you want your kids to learn something in Pandora, teach them how the rides work and how the artistry comes together with current technology in the theme park to make something beautiful. That's much more concrete and interesting (not to mention hands-on, which is exactly what Pandora will be) to a child when they set foot into a new environment. Exploration and how stuff works are the ways to learn in the amazing world of Pandora. Not far off moons. Otherwise you're just going to hear, "Dad, you know it's just a movie, right? But how do they make the plants glow and play music to you when you touch them?"
