There are many problems children face when going online. The most serious problem is the faded eyesight, children can not see clearly the blackboard in class. When they put on glasses, it became inconvenient doing some physical excise. Another problem is that they may sank in internet on which there are many interesting programs distracting their attention, like cartoons, Tv shows and stuff thing like that. They may have no time to do their homework and their exam scores will drop down. And at the last, children may decease the time playing with their friends which can cause lonely feelings.