Ender's Game Chapters 4-6

In the next couple chapters of Ender's Game, a lot happens. In chapters 4-6 we see how smart Ender really is. Ender showed this by breaking into the desk's security system and showing the ability to double large numbers in his head. We also see how Ender really is a tactical genius when he easily beats one of the older kids at a game they play. When Ender breaks a kid's arm on the shuttle, I think he fears he is becoming more and more like Peter and doesn't like it. There are also many scenes where Ender thinks about his family and misses them. When he is eating lunch by himself he imagines his parents and siblings eating with him. Ender thinks to himself that he is stupid for coming to Battle School and that he should have stayed home. I think this uncertainty about his decision may prove to be a flaw in his training, later in the book.