"Puberty" The Origin of Man PPT Courseware

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"Puberty" The Origin of Man PPT Courseware

Information: Some people say that adolescence is the flower season and the rainy season. All people who care about you will say, don’t be intoxicated by flowers or get wet by heavy rains. You should welcome this flower season and rainy season with reason. The time to think rationally is when you grow up. Adolescence is a critical period in life, a transitional period, and adolescence is the cornerstone of future success.

How do you know you have reached puberty?

How can we spend our adolescence healthily?

learning target

1. Describe the developmental characteristics of adolescence. (Including physical changes and psychological changes)

2. Through discussion and communication, pay attention to the physical and mental changes of yourself and your classmates, and spend adolescence healthily together.

Analyze and discuss

1. Is there any difference in the age at which boys and girls begin to gain height?

There are differences. Generally speaking, girls develop earlier than boys. Girls are 8.5-9 years old and boys are 10.5-11 years old. Girls develop two years earlier than boys.

2. Are the height changes of you and the students in this group completely consistent with the data in the picture? If there are discrepancies, please analyze the reasons.

May not be entirely consistent. The data in the picture is just the average height of boys and girls in a certain place. Students of the same age and gender in different regions, different living conditions and different physiques will always have different height changes. Therefore, the height change data of myself and my classmates are often not completely consistent with the data in the figure.

3. Are the changes in body shape of boys and girls related to the development of testicles and ovaries?

Changes in body shape in boys and girls are related to the development of testicles and ovaries. By comparing the two graphs in the data analysis, it can be found that with the development of testicles and ovaries, the height of boys and girls begins to increase significantly, and the weight also increases significantly, which will inevitably lead to changes in body shape.

4. What other physical changes do boys and girls undergo during puberty?

Boys: There may also be physical changes such as protruding Adam's apple, thickening of voice, growth of beard, pubic hair and armpit hair;

Girls: Physical changes such as thinner voice, increased fat accumulation, rounded buttocks, enlarged breasts, and appearance of pubic and armpit hair may also occur.

What did your mother always tell you during menstruation?

1. Wash the vulva with warm water every day, and the towel and basin used should be clean.

2. Use clean sanitary napkins.

3. Avoid catching cold.

4. Be comfortable and emotionally stable.

5. Get enough sleep and rest.

6. Carry out appropriate exercise, but avoid strenuous exercise.

Psychological changes in adolescence

1. Have a strong sense of independence, become dependent when encountering setbacks, and long for the care of parents and teachers.

2. The inner world becomes increasingly complicated, and there are some things that I don’t want to discuss with my parents.

3. Sexual awareness begins to emerge.

Mental health in adolescence

1. Treat your own physical and mental changes correctly and seek psychological balance;

2. Establish lofty ideals and cultivate noble sentiments;

3. Develop normal interpersonal interactions and achieve self-respect and self-love.

Standard training

1. As the saying goes, "When a woman changes her age, she becomes more beautiful." Do you think the time when this huge change occurred was mainly concentrated in ( )

A.Childhood B.Adolescence

C. Adolescence D. Middle age

2. Which of the following is not a characteristic of pubertal development ( )

A. Sudden increase in height B. Significant enhancement of heart and lung functions

C. Rapid development of sexual organs D. Significant increase in brain weight

3. Pay attention to hygiene during adolescence and should not ( )

A. Maintain an optimistic and cheerful attitude

B. Avoidance knowledge

C. Acquire developmental level sexual knowledge

D. Concentrate your energy on study and work

4. Which of the following phenomena does not belong to the characteristics of psychological changes in adolescence ( )

A. Increased awareness of independence

B. Don’t like talking to other students

C. Beginning to have sexual awareness towards the opposite sex

D. Desire for care from parents and teachers

Extended reading

Globally, 50% of those who have abortions are teenagers, and 10 girls have unsafe abortions every minute. For girls under 15, the risk of dying from complications of childbirth and pregnancy is 25% for girls over 25. 25 times that of women.

According to information provided by the Chongqing Family Planning Research Institute, the total number of induced abortions in my country in 2002 was 1.493 million, and adolescents accounted for approximately 400,000, accounting for approximately one quarter. The incidence of teenage pregnancy in Chongqing is increasing at a rate of 6.8% per year. In 1998, 13% of unmarried teenagers went to Chongqing Family Planning Hospital for abortion surgery. Today, this proportion has risen to 33.6%. A hospital performed nearly 400 abortions in June and July, 1/3 of whom were schoolgirls under the age of 22. In Qingdao City, abortion among girls under the age of 20 has increased from 8% to 13%, and this does not include some underground "clinics". Unintended pregnancy among minors has become an increasingly serious social problem in our country.

Shocking figures and bloody facts tell us that the frequent miscarriages of young girls may not only cost their health throughout their lives, but also the psychological harm to themselves and their families, but also involve considerations of moral norms and bioethics...

As teenagers, you must take every step of adolescence well.

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Update Time: 2024-07-23

This template belongs to biology courseware People's Education Press seventh grade biology book volume 2 industry PPT template

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