|Lessonplans-teachers.com » Tips For Parents From Teachers|
Computer and child: all "no" 2018
To this day there has been a lot of discussion, what is the impact of the computer? Is this harmful? And if so, how? Dangerous if your computer to the TV, or damage is not more than in an ordinary electronic watch? What benefit is it to children? Is there a need for it in primary school age?
Some parents (mine included) think that computer is harmful to children's health during prolonged use, and some, on the contrary, quite at an early age, teach a child to modern gajiram and including computer.
If harmful computer child's body, how? And what you need in order to reduce its impact on the body.
The main harmful factors acting on a person at a computer.
In connection with the process of global computerization of human life, questions arise about the impact of the computer on his body, primarily on his physical and mental health.
Special attention should be paid to study the effect of computer on health of school students, both due to greater sensitivity of children to various environmental factors, and possible long-term consequences of such influence that will have an effect only after many years.
The main harmful factors acting on the person at the computer
• a wide range of electromagnetic radiation, which includes x-ray, ultraviolet and infrared region;
• sitting position for a long time;
• ergonomic settings (flicker, glare, contrast)
• overload of joints of brushes;
• increased load on the vision;
• the impact of computer on mental health (stress loss).
Consider these factors separately.
1. Electromagnetic radiation.
Computer is the most dangerous source of electromagnetic radiation among domestic appliances. First, from the screen of the tube is a soft x-ray radiation. Secondly, the coils inside the monitor generate a variable electromagnetic radiation. It is distributed mainly in the sides and back. And thirdly, used in cathode ray tubes high tension leads to the appearance of the outside of the monitor electrostatic field. The human body can be charged to a voltage of several kilovolts. Along with the monitor is the main source of EMR are: electrified the surface of the Desk and mouse pad; power cord and the system unit; uninterruptible power supply; surge protector.
Thus, many hours of sitting at a computer can lead to, if not disease, at least, to poor health, dry skin and allergic reactions.
2. Diseases of the spine.
Another risk factor when working at a computer is inactivity. Static posture during work, repetitive motion and inefficient organization of the workplace can lead to disorders of the musculoskeletal system PC user. In childhood or adolescence, when the spine is not strong, constant presence at the computer may lead to spinal curvature
3. Increased load on the vision.
The increasing computerization has brought about the so-called computer visual syndrome (KZS). The human visual system poorly adapted to examining the pictures on the display screen. Burning eyes, feeling of "sand" under the eyelids, pain in the eye sockets and forehead, pain when moving eyes, redness of the eyeballs - these complaints occur in a significant percentage of PC users and depend on the time of continuous operation of the screen, and her character. Have users asthenopia appears after 2 hours, most within 4 hours and almost all in 6 hours of work on the PC screen. Especially often get tired eyes in children because their eyes and the muscles that control them, is not strong. Unlimited time sitting in front of the TV or computer, reading to excess demand from young eyes serious stress.
4. Overloading the joints of the hands.
For working with computer, mainly using a mouse and keyboard, but these devices are forced to make thousands of repetitive motions that in combination with the constant tension of the muscles of the hand leads to a pinched nerve in the carpal tunnel, and subsequently to pain in the wrist.
5. Ergonomic parameters.
On the health of users is influenced by the parameters of the monitor screen, in particular, to change the contrast of the image depending on illuminance of a workplace, the glare on the surface of the screen from bright light sources, etc.
Important are light sources, parameters of furniture and size of room where computer equipment is located. A flickering screen is virtually harmless to the eyes, greatly straining the nervous system. The visual part of the brain analyzes the image at a rate of 24 "frames" per second. And one "frame" is lighter, the other darker, the third - generally 50/50. In such circumstances, the visual part of the brain is particularly strong. The same situation with noise. If you're a long time with a computer that makes a noise, it will be a factor in fatigue. Noise acts on the eardrum, and later on the stem and cortical brain structures. Increases the tone of blood vessels and, as a consequence, arterial pressure, leading ultimately to the development of hypertension in childhood.
6. Mental load.
Games require enormous tension, which people rarely experience in everyday life. If you pay attention to the behavior of a child playing, for example, in a computer game "Rally", you can see his clenched teeth and hands, frantically clutching the arm, like throwing his body from side to side with every turn. A special study has shown that children very tired from computer "shooters" and "catch-up", and some particularly emotional user during the game even increased the pressure.
The younger the child, the higher the risk of violations of the vegetative-vascular system, associated with a negative impact on the child's computer.
it can result in fatigue, weakness, difficulty falling asleep and daytime sleepiness, apathy and timidity. Others in excessive temperamental, temper, fast, distractibility, absent-mindedness.
7. The development of an addiction in a child
Computer addiction — addiction to employment-related computer use, leading to a sharp reduction in all other types of activities, restriction of communication with other people.
The signs of addiction
• If the child is eating, drinking tea, preparing lessons at the computer.
• Spent at least one night at the computer.
• Missed school – was sitting at the computer.
• Comes home, and straight to the computer.
• Forgot to eat, brush your teeth (before such was not observed).
• Is in a bad, irritable mood, nothing to do if computer broke down.
• Conflict, threatens to blackmail in response to the prohibition to sit at the computer.
The first stage is interest.
Friends advised me how to relax, to "kill time", to have fun.
The second stage is retraction.
Abstinence is accompanied by a real "brittle": bored and sad, and things don't go to mind.
The third stage – dependent.
Of course, people with mental disorders find peace and rest in the Internet because get there from many real-world problems. But mentally healthy people excessive Internet become addicted to it, and every addiction to some extent — mental disorders.
Symptoms of addiction
Established symptoms of addiction can be divided into three groups:
This dependence is most frequent in childhood and adolescence, especially in boys. A symptom is not in itself the time spent at the computer and focus around the computer all the interests of the child, exclusion of other activities. Primary school computer addiction is usually manifested in the form of addiction to computer games. In older ages it starts to include more meaningful work: improving your own computer, search computer software and other materials on the Internet, programming, etc. However, the computer provides the opportunity for virtual communication (particularly via the Internet, mitigating the negative psychological effects of violation of real interpersonal relationships.
On the basis of the listed negative factors of influence of computer on human health, it can be concluded that the child's body it is very harmful, especially in long time spending.
|Views: 436 | ||
|Total comments: 0|