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At the onset of puberty, adolescents show rapid physical and psychological development. It is manifested by rapid growth and changes in the body. Muscles, bones and other tissues grow rapidly across the board, resulting in instability"Childish"with"Mature"There will be a large hovering on the scale.
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Answer: The characteristics of physical development in adolescence are mainly the increase in height and weight, as well as the important period for the development of sexual organs.
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I have no way to answer, I hope to go to the relevant departments to understand and answer, and make detailed methods and plans.
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Adolescence is a transitional period of development from childhood (infancy) to adolescence (maturity).
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12 15-year-old students are in the juvenile development period, also known as puberty, in which the development of the physical form and function of the teenager has the following characteristics: (1) The body and weight develop rapidly. The rapid growth of the body is the most obvious feature of the appearance changes during puberty.
Around the age of 12, the height of a teenager can increase by 6 10 cm per year, and the weight can increase by 5 8 kg per year. But.
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The characteristics of bone in children and adolescents can be summarized as follows: more organic matter, less inorganic matter, more cartilage, less bone, more cancellous bone, and less dense bone.
Therefore, the elasticity and toughness of the bone are strong, and it is not easy to fracture, but the hardness is small, and it is easy to bend and deform, so a good posture should be maintained, and strength training should be appropriate.
The bones of children and adolescents are not completely ossified, and there are many cartilages, and the cartilage that exists between the epiphysis and the diaphysis of long bones is called epiphyseal cartilage, which makes the bone grow. Teenagers have rapid bone growth. Between the ages of 18 and 20, ossification gradually progresses to the completion of ossification.
Therefore, in the adolescent period, it is necessary to pay attention to the overall development of the body and correct posture during training. For example, if you do asymmetrical movements such as pushing, kicking, stepping and jumping, you should pay attention to the exercises of the opposite limb. Care should be taken to avoid injury and development of epiphyseal cartilage when practicing on hard surfaces.
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1) Children's psychological age characteristics refer to the general, typical and essential characteristics formed in the various age stages of children's development, which are related to the age stages of children's physiological development, but are not determined by age.
2) Under certain conditions, the age characteristics of children are relatively stable, and at the same time, they can change with the conditions of social life and education.
3) There is an imbalance in children's development due to individual differences.
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According to the developmental characteristics and needs of the adolescent stage
Adolescent sexual development: In late childhood or adolescence, sexual attraction begins to be experienced and felt, and there is a vague awareness of one's sexual orientation. According to Professor Erickson, a well-known psychologist at Harvard University, adolescents experience an identity crisis, a state of inner anxiety due to the inability or difficulty in self-pursuit due to the inability or difficulty in obtaining self-affirmation, which is a short-lived, paradoxical period of stress.
For example, young girls will be more interested in women's things, imitate the makeup of idols and peers they identify, and give up masculine activities; Teenagers imitate men's clothing or things from electric finger keys, peers, the Internet and other channels, such as smoking, drinking, speaking tone, posture, etc. When you hear about your child's sexual problems, the first thing to do is to settle your emotions and accept them in a way that is not critical or judgmental.
Help teenagers understand sex correctly:
1. Mental health. At a time when young people's self-consciousness is rapidly increasing and they are moving from figurative thinking to abstract thinking, parents should teach them more scientific, advanced, and healthy new things. If there is suspicion, jealousy, rebellion, etc., parents should calmly analyze and do not treat them roughly.
2. Optimistic. Emotions in adolescence are easily excited, with large ups and downs, and there are obvious polarities, such as ecstasy, anger, despair, etc. Parents should let them learn the skills of self-regulation and talk to them frequently, so that they can learn to deal with praise and criticism correctly, and overcome the weakness of emotional ups and downs.
3. Parents must not be too feudal anymore, and sometimes, it is necessary to teach some relevant sexual knowledge to adolescent children. Instead of letting them have fantasies about sex and go to some informal channels to learn about incorrect sexual knowledge, it is better to let parents help their children learn about sex.
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In the process of cognitive development, the individual exhibits temporal sequentiality, that is, in a specific period of time, the child or adolescent will show some more consistent ways of thinking and behaving. Piaget divided children's cognitive development into four successive stages of development. The first stage is the "perceptual-motor phase".
It usually occurs between birth and 2 years of age, when children rely on reflex behaviors or movements to solve problems, and their intellectual performance is mainly limited to their own movements. Later in this stage, the transition from action thinking to image thinking begins to appear.
The second stage is the "pre-computation phase". It usually occurs in children 2-7 years of age. At this time, children's thinking has already shown symbolic characteristics, they can represent the inner world and the outer world through appearances, words and other symbolic forms, but their thinking is still intuitive, non-logical and abstract with a low degree of abstraction, and has obvious self-centeredness.
The third stage is the "concrete operation stage". It happens in children of the age of children. At this time, children's thinking has obvious symbolic and logical nature, and can make simple logical deductions, such as a>b, b>c, then a>c.
The self-centeredness of thinking has been basically overcome, but because the degree of abstraction is still very low, thinking activities are still limited to concrete things and past experiences, and it is still powerless in the face of certain mathematical, physical and social problems.
The fourth stage is the "formal operation stage". Individuals are generally completed around the age of age. At this time, children are able to set and test hypotheses, monitor and introspect their own thinking activities, and the abstraction of thinking is greatly improved.
They are more logical and systematic in their problem-solving. Piaget further pointed out that after these four successive stages of development, the individual's intellectual level basically matures.
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Adolescents are in the second peak period of accelerated physical and mental development, and the development and maturity of physiological quality, especially the nervous system, provides an important material prerequisite for the development of their cognition. Therefore, the entire adolescent school period is in a period of rapid rise in cognitive development.
The basic factors in the cognitive process of junior high school students have been further improved and improved, so that junior high school students can complete various cognitive tasks more easily, quickly and effectively.
The emergence of new cognitive structures has enabled junior high school students to skillfully use assumptions, abstract concepts, and logical reasoning to solve problems. Generally speaking, the main characteristic of an individual's cognition in junior high school is that the abstract logic of thinking is dominant, but to a large extent, it still needs the support of experience. In high school, the elements of cognition develop rapidly, the cognitive structure is constantly improved, the abstract logical thinking has entered the mature stage, the dialectical logical thinking and creative thinking have developed significantly, the consciousness of cognition has been enhanced, the factors in the cognitive structure have basically tended to a stable state, and the cognitive structure has formed a new situation of coordinated development.
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