writing esay tugas UAS

The Disadvantages of Mobile Phone
for Student at Junior High School

A mobile phone ( also known as a Cellular Phone) is a device which can make and receive telephone calls over a radio link whilst moving around a wide geographic area. As we know mobile phone that used for our necessity or style in our life. Unfortunately, the student at junior high school they are misuse employing of mobile phone. However, mobile phone has disadvantages especially for student at junior high school usually they put the mobile phone in the pocket or school bag, in order not to get caught by a teacher during the lesson. Realize of that there are two disadvantages of mobile phone.
The first is student listen to the music while studying in the classroom, it could the radiation of their ear and it can disturb the concentration of their study. A study led by Dr Agarwal, Ph.D summarizes some of the researched health consequences of the microwave radiation are exposed to though mobile phone use:
Electromagnetic waves alter [electric activity of the brain] and cause disturbance in sleep ; cause difficulty in concentration, fatigue, and headache ; and increase reaction time in a time-dependent manner. They increase the resting blood pressure and reduce the production of melatonin. They are also implicated in DNA strand breaks.
The second is student can save the video which should not they watch (porn video). Automatically their mind will change, will often mirages, not focus of what their obligation such as school, worship, read the holly Qur’an nor the related obligations and less respect for older people than them, and loss of decorum.
Therefore, we realize that as a prospective teacher we must work together with their parents where parents should control their children mobile phones in order to avoid undesirable. If we as the parents tell our children not to answer calls from numbers they do not know. Make regulations for the time spent talking, when mobile phones can be used, and when the phone must be switched off. You might to check the call time to ensure they are made within the limits you set and can control any application of their mobile phone.