In terms of positives Computer is a modern tool which has made life very easy and simple, it helps us to add the necessary information, helps complete the job more easily, it helps me format my lessons effectively. ... ( lợi ích)
Also in terms of the negative,On mobile devices too long it can lead to obesity in children, if sitting too long on the computer will cause eye pain,When we use the computer too much, too long without going out, they will be severely affected by the child's bones and joints. It makes the child unable to develop comprehensively and not only that it can also make children at risk of spinal diseases such as scoliosis, spinal deviation ..., ... (mặt xấu) 

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