Some people believe that children can learn effectively by watching TV and they should be encouraged to watch TV at home and at school. To what extent do you agree or disagree?

The development of electric equipment is more and more popular today, most of them which seem to such a successful creativity is TV. Since TV appeared, there are many benefits for human including children's learning.
The vital function of TV is sharing information and entertainment, with these points it also helps children in studying and relaxing. TV has many channels, so children can receive a diverse knowledge from different programs. Moreover, children will be attracted by the moving options on the screen, this is the reason why the content of lessons can be absorbed interesting and effectively for them. Another watching TV after study for long hours that help them to relax and get the energy to prepare for the next lessons. Furthermore, parents and school can combinate between studying and relaxing on the TV, for example, watching some aminations on Disney channel can help children to learn EL and feel comfortable.
However, relying on TV so much, it also exists some harmful problems. Watching TV for long hours without a suitable distance that will make children's eyes worse. Besides, if children just expect to watch TV, they will not have spirit in the normal lesson. Deal with parents allow children to watch whatever they want without controlling, sometimes they can see some adult contents, and it is not suitable for their age.
To sum up. TV brings back both positive and negative aspects for children's learning, so to use this method productively, parents and school have to control about the time and content of TV that fit children's age, also make sure the distance good for their eyes.