Of course, it is not easy to "resolve" their disputes, but at this moment we teach them to conflict correctly, always keep love for each other, find solutions, ask for help! Here is for example, always the case so, that Junior climb to senior and prevent them to do something its, complex. I taught Miroslava ask Garasu (especially if she plays with somebody else), take it to the game, to teach him. Immediately no whining, sitting peacefully, the puzzle is more difficult to collect. I think jealousy happens when the parents of their wrong behavior offend one of the children...