Since I've done a written part, I will first explain basic concepts(e.g kepler laws, orbital speed,period...), different types of orbits and different types of satellites and what they are used for. And here's when it comes the KSP part, where I'll exemplify what I had said before. The mission could be a communication satellite launch and to get it into orbit, but I then thought that I could do something bigger but I'm not exactly sure what to do. Maybe a communication satellite network? What do you think? Will MechJeb make it look more like a real launch? Because I don't want that they think that it's an easy game with no physics behind, do you know what I mean?