World population growth and its countermeasures

Population problem is one of the concerns of all countries in the world today, and population growth has a direct impact on the natural environment and social economy. If this problem is handled well, it will make human beings develop harmoniously with nature and society, otherwise a series of environmental and social problems will arise.

(Written on the blackboard) Section 2 World Population Problem

First, the problems caused by rapid population growth.

1, the relationship between man and environment

(Slide) Show "Pattern Diagram of the Relationship between Human and Environment"

Question: What is the close relationship between human beings and the environment? People are both producers and consumers. In order to survive and develop, human beings must obtain resources and energy from the environment to meet various needs. At the same time, human beings have to constantly transport waste (waste water, waste gas, garbage, etc.). ) Entering the environment of production and life, people are in close contact with the environment all the time. )

(Students discuss) Look at the cartoon "Miserable Mother" and ask: So many people on the earth need the care of "mother". Can mother bear it? Discuss in groups what problems the rapid population growth has brought to the environment and society.

Question:

1, the population is growing too fast, and it is difficult for the environment to supply enough resources for a while, so what unreasonable methods will human beings take to meet the needs of production and life? What are the consequences?

2. What other problems will arise from the perspective of social life?

(Teacher's summary) For the rapid growth of population, in order to meet various needs, human beings have destroyed the environment, such as destroying forests and reclaiming land from lakes, resulting in serious consequences such as soil erosion, land desertification and environmental degradation. The rapid population growth has also brought many social problems, including food, clothing, housing and transportation, as well as medical care, education, transportation, housing and employment.

(Writing on the blackboard) 2. Problems brought about by rapid population growth

(1) Resources are destroyed and the environment is deteriorated.

(2) causing social problems

Above, we understand the problems brought about by the rapid population growth. So, is the population development of a country as slow as possible? After reading the text, tell the reasons for right or wrong? If the population growth is too slow, it will stop growing and then continue to decrease, which will also bring some social problems.

Too fast or too slow population growth will cause many problems. Please discuss and think about some reasonable ways to solve the population problem.

3. Countermeasures: Control population and improve population quality.

Population growth should be compatible with social and economic development and coordinated with environment and resources.

(Transition) From the perspective of population development history, early people lived in areas with relatively developed agricultural production. Later, with the emergence of towns, some rural people gradually moved to cities. In recent decades, the proportion of urban population in the world's total population has been rising, and a large number of people have flocked to cities from rural areas, making more and more big cities in the world.

(Question) Look at the picture and tell the reason why the rural population flows to the city. Mainly due to economic reasons, the city has many employment opportunities, good living conditions and good education and medical conditions. )

(blackboard writing) 2. Population migration to cities

1, the level of urbanization is the symbol of national development level.

2. The proportion of urban population is rising.

(Slide) World urban population growth map:

Why is the proportion of urban population one of the criteria to measure the development level of a country? Cities are generally places where modern industry, science and culture are concentrated. The greater the proportion of urban population, the more developed the modern industry, science and culture of this country. At present, 70% of the population in developed countries is urban population, while the urban population in developing countries accounts for just over 30% of the population. At present, the phenomenon of large-scale migration of rural population to cities mainly occurs in developing countries, and many of them are due to the surplus rural labor force, which makes a large number of rural population flood into cities unplanned. )

(Student Activities) In your real life, do you feel that the urban population is increasing? With the increase of urban population, what problems will arise? Please give an example?

Teachers and students discuss with each other, teachers guide them in time, and students summarize.

(Write a summary on the blackboard) 3. Problems caused by urban overpopulation

Housing shortage, traffic jam, air pollution, waste pollution, noise pollution

(Summary) In this lesson, we learned two problems, one is the problem brought about by the rapid population growth, and the other is the problem of rural population migrating to cities. These are two important problems facing our country. We must understand the family planning policy well, publicize it to people around us, and do our bit to solve these two problems in our country.

design principle

According to the requirements of this textbook for knowledge, ability, value and concept, this section designs two main teaching links around the two main problems in this section: problems brought about by rapid population growth; Population migration to cities and its problems. Each part has two links: one is to form a general understanding through the charts and data in the schematic diagram, that is, to learn the theory first; The second link is to use theory to guide practice, to stimulate students to explore various problems through cartoons and landscape maps of urban problems, and to analyze the nature of things with the relevant knowledge they have learned (such as the causes of mother's pain; Reasons for rural population flowing to cities; The problems brought by the rapid development of the city) and express their feelings. Let students feel that both population and urban problems are closely related to themselves, and they need to start from me.

blackboard-writing design

Section 2 World Population Issues

1. Problems caused by rapid population growth

1, the relationship between man and environment)

2. Problems caused by rapid population growth

(1) Resources are destroyed and the environment is deteriorated.

(2) causing social problems

3. Countermeasures: Control population and improve population quality.

Population growth should be compatible with social and economic development and coordinated with environment and resources.

2. Population migration to cities

1, the level of urbanization is the symbol of national development level.

2. The proportion of urban population is rising.

3. Problems caused by urban overpopulation.

Housing shortage, traffic jam, air pollution, waste pollution, noise pollution