Model essay on middle school chemistry education 1: Overview of the value of middle school chemistry education: From the perspective of the relationship between behavior and value, value orientation affects or even determines people's behavior, and behavior directly or tortuous reflects value. Observation and thinking, expression and rhetoric, judgment and choice are all closely related to the values of individuals and social groups. The chemical literacy formed in middle school chemistry education will also affect and determine people's observation methods of life and society, which is the observation value of chemistry education.
Keywords: middle school; Chemistry; education
First, the meaning of value
The meaning of value lies in meeting people's needs, that is, anything that can meet people's needs is valuable. The value of middle school chemistry education is multidimensional and comprehensive, not linear and simple. Generally speaking, it has the value of knowledge, skill, film and television, thinking, scientific literacy, morality, observation, expression and choice. Knowledge value. It is through the education of chemistry course that students have accumulated and mastered a certain level of chemistry knowledge, learned a lot about the content of chemistry course, and remembered some, so they can easily answer questions and cope with exams. Chemistry education and classroom training in middle schools make students familiar with chemical language, especially elemental symbols and their derived chemical formulas and chemical equations. If the experimental teaching link is implemented, students can design experimental schemes, select experimental supplies, control experimental conditions, successfully complete the experiment step by step according to standards, systematically observe and record in detail, write experimental reports, ask questions and think about solving problems, so as to realize the teaching value of the experiment? Proficient, verify chemical knowledge and explore micro-practice. In fact, what we usually say is to realize the teaching goal, that is, to realize the value of education and teaching. The exam-oriented value of students' learning experience, from primary school to middle school and then to university, is a cruel reality faced by children in China in the long historical period of China society because of the scarcity of high-quality educational resources, the inertia of educational traditions and the imbalance of policy design. Exam-oriented education is helpless and inevitable. In this way, the value of middle school chemistry education for the majority of students is bound to be reflected in the indispensable test-taking weapons in the senior high school entrance examination and the college entrance examination. Six minus one equals zero? . But this can only be a distorted phenomenon in the special period of China's transformation. The exam-oriented value of middle school chemistry curriculum also includes other middle school courses, which cannot be overestimated! At present, under the situation that basic education is in full swing, what are the knowledge value, skill value and examination value of chemistry education in middle schools mentioned above? It is light to go into battle lightly, and it is light to go into battle lightly. . The knowledge and skills of chemistry education depend on the whole teaching process, especially the experimental skills are the core values of chemistry education. Although examination is essential, it is only a part of testing and selection. However, due to the social system, students' test scores have become the performance list of teachers, officials, schools and even the government, which has fooled thousands of students in Qian Qian. Originally, the test scores were less than 1% in the value system of education, but they became 99% crazy? Dry goods? . Due to the limitation of examination methods (only in written form), the core value of chemical experiment skills in middle schools is selectively discarded! Without goal, there is no process, and without process, there is no goal. At the same time, even the learning activities of chemical knowledge have become a process of passive water without roots, empty and rigid. Students regard learning chemistry as a kind of fear. They have no interest and courage. If they learn it, they will take the exam. If they fail, they will forget it!
Second, the thinking value of chemistry education
Thinking from a more abstract level, the thinking value of middle school chemistry education is also a thinking form with chemical characteristics, such as rational thinking, empirical thinking, image thinking and abstract thinking. Thinking is the core of ability. Further discussion on the category of thinking should be based on psychological science and brain science, and limited to the level. This article will not expand this too much. This paper puts forward some opinions on the image thinking of the thinking value of chemistry education. First, a large number of subject terms in the chemistry course? Chemical symbols, such as element symbols, electronic types, molecular formulas, structural formulas, schematic diagrams of atomic structures, chemical equations, etc. , reflecting the objective existence, movement and change of particles and the whole chemical substance. On the one hand, we should be familiar with the meaning and expression norms of these professional terms; On the other hand, it's actually more important, such as? See things and think about people? Generally speaking, when reading, reading and writing these terms, there is a micro-macro, dynamic and static, on-off physical imagination mapping of chemicals and their movements in the brain. Second, chemistry texts, such as texts in exercise books, reference books, installation drawings, etc., can not only be understood and drawn, but also be mapped with the actual installation process in the chemistry laboratory (experimental platform) in mind, just like buying tickets to enter the cinema? Sit in the right position? . The value of scientific literacy is a comprehensive concept. Physics, chemistry, biology, geography and other disciplines offered in middle schools all bear the extremely important value pursuit of this modern era. The good effect of middle school chemistry education is to make the scientific literacy value of the majority of students grow in a balanced way and cooperate with each other? Reason, life, land? Like other subjects, crossing your hands will make sound and your wings will fly. As far as the role of chemistry is concerned, we can follow suit and understand Tao at will. First, chemical experiments need to pay attention to pertinence and cleanliness, and cultivate our scientific washing. When applied to daily life, such as a teacup, the upper part of the outer mouth touches people's lips, which is the key point of scrubbing, but many people just shake the cup with clear water or boiling water, which makes people feel at ease. In addition, water can't wash off the oil stains on the cup wall, so it must be cleaned and scrubbed with a little soap or liquid. The sign of cleanliness is that there is only a uniform water film on the cup wall, but many times the washed cup is still? Pear blossoms bring rain? This is also the result of not cleaning. Also, cups with lip stains and oil stains should be washed with running water. If the still water is changed at least three times, the dirty water will be drained every time, so that the residue of dirt is almost gone. Not applicable here? Seeing is believing? If you can't see the dirt, do you think it is clean? ) rules. Secondly, not long ago (April 6th), the explosion of PX (p-xylene) factory in Gu Lei Peninsula, Zhangzhou, Fujian Province, I believe that people with sensitive nerves, especially those with knowledge of chemical engineering, will be deeply impressed. Flames were blazing, smoke billowed, and residents were evacuated 18 km, which made people panic. According to the data, what is the construction project of this factory? Plan? Settled in Xiamen, it plans to invest 654.38+008 billion yuan, with an annual output of 800,000 tons of p-xylene (note that the global annual output of PX is more than 30 million tons), and the annual industrial output value is 80 billion yuan, in 2007. ? Old? Once again, when 105 CPPCC members jointly objected, Xiamen citizens took it. Take a walk? Finally, the relevant central ministries and commissions and Fujian Province coordinated Gu Lei's relocation in Zhangzhou (I really can't understand it here). The leaders of the 65,438+005 members are the famous academician of China Academy of Sciences, the professor of Xiamen University (once Professor Tsinghua) and Zhao Nvshi, a pioneer in the field of life organophosphorus chemistry who enjoys a high reputation in international academic circles. Why bother to talk about PX factory, explosion, 800,000 tons, 108 billion and 80 billion, 105 CPPCC members and Xiamen citizens? Take a walk? Zhao, academician (also known as professor), organophosphorus chemistry and other nouns and data are trying to arouse our attention to the value of scientific literacy in chemistry education and support our responsibility as citizens. Scientific literacy is knowledge literacy and rational literacy, which enables us to think and judge when facing problems. As for moral values, this paper deals with the moral values advocated by middle school chemistry education. The moral system in a broad sense refers to moral emotion, moral value judgment, moral behavior, moral ability, moral responsibility and moral realm. People who receive good chemistry education have rich and complete chemistry literacy, and their ability to understand and evaluate life is more professional and accurate. For example, if the village or city where we live is in the upper reaches of the river, the pollution caused by garbage, especially heavy metal pollution and pesticide and antibiotic pollution, will be more serious and lasting. How to eliminate or reduce communication is related to both economic interests and moral values. If waste batteries are dumped together with domestic garbage without special recycling treatment, they are usually polluted by heavy metals such as cadmium and mercury. Cadmium pollution leads to bone pain, and mercury pollution damages people's nerves. First, the injured animals and plants form an ecological chain of pollution transfer, and finally? Karma? For human beings themselves. If the domestic garbage in the upstream is dumped on the bank of the next river, the pollution of heavy metals alone will also do harm to the ecological environment and human life in the downstream. Whether it is agricultural irrigation water or domestic water, this harm is cumulative. Subtle? Yes If the general public wants to call for shouts, they must start from themselves and start from small things; If you are a participant in the decision, you should be more careful. Pesticides and drugs (abuse of antibiotics) can not be ignored. The more stable their performance, the more lasting the harm, especially the pollution of groundwater is a crime against future generations after thousands of years, because this is? Childless? A deep sin. Whether it is the irregular dumping of garbage by upstream people or the abuse of pesticides and antibiotics by contemporary people, it is hurting people living in the lower reaches of the river and hurting ourselves and our descendants. If we, as people with chemical literacy, stick to the bottom line of rational and moral values, we can bravely prevent or flexibly reduce the occurrence of these hazards, and we can design and lead a new human lifestyle to make it healthier and more environmentally friendly. The harmony of human civilization will have the rhythm of our wisdom and morality.
Third, the observation value of chemistry education
From the relationship between behavior and value, value orientation affects or even determines people's behavior, and behavior directly or tortuous reflects value. Observation and thinking, expression and rhetoric, judgment and choice are all closely related to the values of individuals and social groups. The chemical literacy formed in middle school chemistry education will also affect and determine people's observation methods of life and society, which is the observation value of chemistry education. Make a rational, accurate and systematic observation of life and social problems, such as the Monkey King's? Eye of fire? We will not blindly follow, will not be fooled, we are sober, of course, sometimes we will be anxious and painful, but we are human beings, not ostriches! The observation value of middle school chemistry education, that is, observation ability, refers to having a scientific and professional observation perspective. For example, in China, Tomb-Sweeping Day worships his ancestors, of course? No ceremony, no content? (Yi Zhongtian). However, setting off firecrackers is lively, but it pollutes the air. Burning paper money is more likely to cause forest fires. Now it has been strictly prohibited by policies, from fines to arrest and detention. So people put plastic flowers in front of the tomb to show their condolences. According to our observation, this is also against the concept of ecological civilization. Because plastic flowers are extremely perishable and cannot be assimilated with herbaceous soil, they accumulate year by year, which is not only unsightly, but also white pollution (the white pollution here generally refers to the pollution formed by discarded synthetic organic polymer materials such as plastics and synthetic fibers, not white pollution! )。 Therefore, it is urgent to design and guide new forms of ancestor worship, such as buying or picking real flowers and fruits, customs acceptance, scientific recognition, policy permission, peace of mind and environmental protection. In addition, human beings observe life, exchange feelings and thoughts with each other, and form * * * knowledge through constant judgment, which affects the conception and trend of policies. Observation, expression and choice are only based on the interaction between the cultural value of human heart and human behavior. The connotations of these three concepts (namely, observation value, expression value and choice value of middle school chemistry education) are highly coincident, but their application forms are different. So I won't go into details.
refer to
1 middle school chemistry science method education and curriculum textbook reform Tony Gunawan chemistry education 2002-06-28
2 On the implementation strategy of green chemistry education in middle schools Dong Changyao and Yang Shizhong Chemistry Education 2002- 1 1-28
Model essay 2 on middle school chemistry education: an overview of strategies to improve the quality of middle school chemistry education;
Students are builders of the future and shoulder important historical missions. Looking forward to the middle school chemistry education in the new era, every teacher should have a sense of responsibility, combine the current education situation, adopt practical and effective education policies, improve the quality of middle school chemistry education, train more useful talents for the society, and let students have a better tomorrow.
Keywords: chemistry; quality of education
First, pay attention to the art of teaching and improve the efficiency of classroom teaching.
Classroom is the most important place for students to learn knowledge, and the improvement of education quality should start with classroom teaching. Whether teachers can tell the essence and key points of knowledge in class, stimulate students' learning enthusiasm and curiosity is the key to a good class. In the process of teaching, we should pay attention to the diversification of teaching means and the flexibility of methods, and teachers should naturally connect different kinds of knowledge and establish a harmonious teaching atmosphere. Teachers should be meticulous and orderly in teaching content, pay attention to observing students' expressions, judge students' acceptance ability, and adjust teaching content and methods in time. Attention should be paid to mobilizing the atmosphere of classroom learning. You can ask new questions on the basis of what you have learned, mobilize students' brains to think through questions, and use the power of logical thinking to let students find and solve problems on their own initiative. In educational work, relaxed, happy, philosophical and interesting educational methods can often achieve good teaching results. Teachers' casual sense of humor can deeply attract and infect students. Humor teaching is an art and an elegant aesthetic taste. What about it in teaching? Catalyst? , can inadvertently let students firmly remember knowledge. Humor teaching not only enlivens the classroom atmosphere, but also cultivates students' interest in learning, inspires students' scientific thinking and gives them pleasant enjoyment. When students' enthusiasm is improved, the quality of education will naturally go up.
Second, to stimulate students' interest
Middle school students are hands-on and imaginative, and their enthusiasm for learning depends on their interest in learning. The ability to remember images is stronger than the ability to remember abstractions. The effective guidance of teachers can play an important role in cultivating students' interest in learning. Interest is the best source of motivation for students to learn. In order to stimulate students' interest in learning chemistry, it is very important for teachers to effectively guide and help students solve obstacles in the learning process. Educators can stimulate students' interest according to their characteristics, let them use their hands and brains, and train their thinking and hands-on ability. Middle school students are more or less curious about chemistry, which is an experimental science. Introducing dazzling chemical experiments will arouse students' strong thirst for knowledge. Teachers can make use of the characteristics of chemistry at the beginning of teaching to arouse students' curiosity. It is very important to cultivate and maintain students' interest in chemistry in the teaching process and turn temporary curiosity into tireless curiosity. For example, when students learn some abstract chemical terms, element symbols and other basic concepts, they often get bored and lose their original interest. At this time, students' knowledge of the history of chemical development can be supplemented, and some interesting stories about scientists exploring this part of chemistry, such as the discovery of the periodic table of elements and the determination of benzene structure, can be introduced. Which scientists have an epiphany in their dreams after thinking day and night, so that students can realize the importance of learning chemistry well and that chemistry is closely related to our lives. This will help students to ease their fear of chemistry learning, maintain their interest in chemistry learning and enhance their confidence in chemistry learning.
Third, attach importance to experimental teaching and improve students' quality in an all-round way.
Chemistry is quite different from other courses. As a natural science, experiment course is an important part of it. Teachers should do a good job in classroom demonstration experiments strictly, which can play a vital role in cultivating students' interest in scientific experiments, and educators should pay attention to guiding students to establish good scientific literacy. The subject of chemistry is based on experiments, and the real classroom should not be far away from experiments, which is the most effective and rewarding way for students to learn. Experiments can stimulate students' strong interest in learning, cultivate students' ability to observe, analyze and solve problems, especially cultivate students' practical ability. Students can not only learn chemical knowledge in experiments, but also learn scientific and rigorous research methods and experimental skills, and cultivate a realistic and serious scientific attitude.
Four. abstract
Students are builders of the future and shoulder important historical missions. Looking forward to the middle school chemistry education in the new era, every teacher should have a sense of responsibility, combine the current education situation, adopt practical and effective education policies, improve the quality of middle school chemistry education, train more useful talents for the society, and let students have a better tomorrow.
refer to
1, Facing the education reform in 2 1 century, Reflections on the connection between middle school chemistry and college chemistry teaching content 1998-02-28 of Liu and Zhu University Chemistry
2. The new direction of chemistry development, green chemistry middle school chemistry should be green chemistry education Huang Shangyi, Journal of Duan Julong Jiangxi Institute of Education (Natural Science Edition) 1999-06-2 1.