1. Read chemistry textbooks carefully
Chemistry textbooks are teaching books that systematically explain the content of textbooks based on the syllabus. If you grasp the textbook, you will also grasp the basic knowledge. You should understand the textbook Focus on seeing and memorizing the main principles, laws, and important conclusions and rules. At the same time, attention should also be paid to learning methods for researching problems in chemistry. Mastering scientific methods of learning is more important than mastering knowledge. Because it can improve the thinking ability of learning.
The process of reading chemistry books is generally divided into three steps.
1. Comprehensively look at a section of the textbook, grasp the overall content of the section, and form a preliminary overall impression in your mind. You must be able to outline the key points, difficulties, key points and essential issues in the textbook.
2． Focus on the key points. On the basis of a comprehensive look, focus on the key points, difficulties and key terms in the textbook, and think about it carefully and repeatedly.
3. Logical thinking: Think actively when reading, master key knowledge, and gradually break through difficult knowledge.
In short, the process of reading can be summarized as: "The whole is divided into parts and the whole", that is, overall perception, partial exploration, and overall understanding.
2. Learning methods of chemical experiments
(1) Experiments - means of learning chemistry
Chemistry is a natural science based on experiments. Experiment is a scientific method for studying chemistry and an important means of learning chemistry.
(2) Observation experiments should be combined with thinking
Observations in chemical experiments are generally conducted in the order of "before reaction → during reaction → after reaction". Observe but also think positively. For example: when observing the phenomenon of copper and zinc being put into dilute sulfuric acid respectively, you want to see why zinc produces gas when placed in dilute sulfuric acid, but no gas is produced when copper is placed in dilute sulfuric acid? Through thinking and sublimating perceptual knowledge, you will gain a deeper understanding: zinc is more active than hydrogen and can replace hydrogen from acid, while copper is not as active as hydrogen, so it cannot replace hydrogen in acid.
(3) "One, two, three" in chemical experimental operations
1. When taking solid powder in the laboratory, it should be "slanted first, sent second, and upright three times." Even if the test tube is tilted, carefully bring the medicine spoon to the bottom of the test tube, then stand the test tube upright so that all the medicine falls to the bottom of the test tube.
2． When taking lumpy solids or metal particles in the laboratory, they should be "one horizontally, two horizontally, and three slowly vertically". That is, first place the container horizontally, put the medicine or metal particles into the mouth of the container, and then slowly stand the container upright so that the medicine or metal particles slowly slide to the bottom of the container to avoid breaking the container.
3. In the filtration operation of liquids, attention should be paid to "one stick, two low, and three lean". That is, the filter paper should be close to the inner wall of the funnel, the edge of the filter paper should be lower than the funnel mouth, the liquid level in the funnel should be lower than the edge of the filter paper, the beaker should be close to the glass rod, and the end of the glass rod should be gently leaned against the third layer On one side of the filter paper, the nozzle at the lower end of the funnel should be close to the inner wall of the beaker.
3. Learning of chemical terms
(1) Chemical terms are tools for learning chemistry
Chemical terms are unique to the discipline of chemistry and are used to study chemistry. Tools are also an international language of science and technology. If you don’t understand chemical terms, you won’t be able to get started in learning chemistry. So, it is important to master it.
(2) How to write and remember chemical formulas well
1. Master the writing method of chemical formulas of elemental substances
2. Master the method of writing chemical formulas of compounds
(3) Master the method of writing and memorizing chemical equations
1. Grasp the reaction rules
2. Write and remember chemical equations in connection with experimental phenomena
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< p>How to learn chemistry wellQian Guoming Li Kesen
Chemistry is a basic natural subject that studies the composition, structure, properties and change laws of matter. Mastering and applying chemical science is essential for Industrial and agricultural production, technology, energy, society, environment and human life all play a very important role.
So, how can we learn chemistry well?
1. Understand double radicals and master chemical terminology
The so-called "double radicals" refer to the basic concepts and basic theories of chemistry. They are an important part of basic chemical knowledge and a key to learning chemistry well. Base. They are generally expressed in concise and concise words and sentences, with a certain degree of scientificity, rigor and logic. When studying, don't just memorize it. You must be good at grasping the key "words" and "words" and understand them accurately. For example, the keywords for the concept of catalyst are "can change", "before and after reaction", "mass and chemical properties", and "unchanged"; the law of conservation of mass focuses on understanding "participating in the reaction", "sum of mass", "equal", and grasping " Three conservations” (elements, atoms, mass). It is not only necessary to correctly understand the double base, but more importantly, to apply it. The so-called "chemical terminology" refers to some chemical terms commonly used in chemical science in the process of communicating, describing and expressing material changes, such as element symbols, chemical formulas, chemical equations, etc., which must be mastered proficiently and used flexibly.
2. Based on structure, understand the properties of matter
The object of chemical research is matter. The composition and structure of matter determine the properties of matter, and the properties of matter restrict the existence of matter. Methods, preparation methods and uses. Therefore, when learning the properties of element compounds, you should grasp their structures to understand the properties of matter. For example, when learning about oxygen, you must think about: Oxygen is composed of many oxygen molecules, and one oxygen molecule is composed of two oxygen atoms. The outermost layer of oxygen atoms has 6 electrons, which are easy to obtain electrons, so the chemical properties of oxygen are relatively Active, many substances can undergo chemical changes with oxygen and release a large amount of heat at room temperature, when ignited or heated. After learning a lot of materials, you must be good at constructing related materials into a knowledge network to organize the knowledge so that it can be firmly mastered.
3. Pay attention to experiments and cultivate hands-on ability
Chemistry is a natural subject based on experiments. When studying the relevant chemical properties of elemental compounds, conducting qualitative and quantitative analysis such as separation and purification, identification and identification of substances, experiments are generally used to verify or complete the investigation to draw conclusions. Therefore, to learn chemistry well, you must pay attention to experiments. From the use of simple commonly used instruments, basic operation training to the design of complex experiments, all must be carefully operated and boldly tested. When designing experiments, it must be scientific and reasonable, that is, the device is simple, the operation is convenient, the procedures are reasonable, and the phenomena are obvious. You should carefully observe and think actively about the teacher's demonstration experiments in class, and master the principles, steps, phenomena and essentials of the experiments. The student experiments and home experiments arranged in the textbook are the best opportunities to cultivate hands-on ability, and you should actively participate in and do them seriously.
4. Pay attention to learning methods and improve learning effects
Chemistry in the third year of junior high school is enlightenment chemistry. The basic knowledge points are many and complicated. With the accumulation of knowledge, some students will fail due to improper learning methods. This can lead to a decline in chemistry scores and even a feeling of weariness with studying. Therefore, to learn chemistry well, we must pay attention to learning methods and improve learning effects. Common effective learning methods include:
(1) Comparison of dual knowledge. Such as combination and decomposition, oxidation and reduction, etc.
(2) Network notes on material properties. For example, a carbon chain knowledge network system memory can be constructed for related substances containing carbon elements.
(3) Similar to knowledge classification. Such as the properties of H2 and CO, the preparation devices of H2 and CO2, etc.
(4) Dispersion of chemical terms. Such as elements, atoms, molecules, valence, chemical formulas and chemical equations, etc. are scattered into chapters and memorized according to the knowledge ladder.
(5) Cross-cutting knowledge points. For example, the entry points for physical and chemical knowledge are density, pressure, buoyancy, gravity, lever principle, electricity, etc.; the entry points for biochemical knowledge are photosynthesis, respiration, greenhouse effect, ozone hole, red tide phenomenon, etc.
5. Timely feedback and refined exercises
After studying each chapter, you must promptly consolidate the knowledge you have learned, check for weak links in learning, and choose some classic exercises appropriately, but you must Overcome the problem of blindly answering questions and falling into a sea of ??questions. When doing questions, don't just focus on the topic, try to expand your thinking. For example, when doing calculation questions, pay attention to selecting some good questions that are related to daily life and combined with exploratory learning. In terms of solution methods, try to solve multiple problems, change one problem, or seek the pattern of solving multiple problems to cultivate the ability to analyze problems, solve problems, and learn creatively.
6. Expand knowledge and read extracurricular readings
In order to expand knowledge horizons, summarize knowledge content, improve problem-solving skills and master problem-solving methods, order a high-quality, accurate guide , practical synchronous tutoring materials are necessary. For example, "Middle School Physiology and Chemistry News" has columns such as study method guidance, knowledge induction, concept analysis, problem-solving skills, chapter training, competition guidance, interesting chemistry, daily chemistry, and science and technology trends. It is a good teacher and helpful friend for teaching and learning, and is worth reading.
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How to learn high school chemistry well
Teacher Ou Weichan
Chemistry is a very fascinating subject. However, due to the characteristics of "complicated, difficult, and messy" in high school chemistry, many students find it difficult to learn high school chemistry. So how can we learn high school chemistry well?
1. Listen carefully to the lecture and take notes.
Good notes are the condensation, supplement and deepening of textbook knowledge, and the display and refinement of thinking processes.
Since the knowledge points of the chemistry subject are numerous, fragmented and scattered, in class, in addition to listening carefully and thinking actively, you must also use your own language to write down the key points and key points taught by the teacher on the basis of understanding. Difficult knowledge, as well as ideas and difficult points, to facilitate future review.
2. Review in time.
Review is not just a simple review of knowledge, but also considering the interconnection of new and old knowledge in your own brain, and reorganizing it to form a new knowledge system. Therefore, it is necessary to review the lecture content in time after class and organize and summarize the knowledge. Only in this way can the knowledge be integrated and avoid the phenomenon of confusion after learning. For example, after learning about the bleaching properties of SO2, compare them with the bleaching properties of chlorine water to find out the differences between the two.
3. Learn to memorize skillfully
Since there are many chemical knowledge points to be memorized, it is difficult to memorize them by rote, so you should learn to memorize them skillfully. Commonly used memory methods in chemistry include: comparison method (often used for knowledge that is easily confused and interferes with each other. The four similar concepts of isotopes, allotropes, homologues, and isomers can be compared to deepen understanding. , memory is strong.), induction method, song formula memory method, understanding memory method and experimental memory method.
4. Practice frequently
Practice is an important way to understand, digest and consolidate classroom knowledge. However, the exercises should be targeted and should not engage in problem-solving tactics. The goal should be to master the basic methods and problem-solving rules. In the process of solving problems, we should pay attention to solving multiple problems and summarizing, so as to achieve the effect of solving one problem and understanding one category. For example, commonly used techniques in chemical calculations include: conservation method, relational expression method, extreme value method, average method, estimation method, difference method, etc.
5. Prepare the "wrong question book"
The purpose of doing questions is to cultivate abilities and find an effective way to find your own weaknesses and deficiencies. Therefore, you should make corrections and record down the wrong questions that usually occur. When recording, you should analyze in detail the cause of the error and the correct solution to the problem. Do not simply write down an answer. At the same time, read and review frequently to avoid similar mistakes in the future.
6. Pay attention to chemical experiments
Chemical experiments can not only cultivate students' observation, thinking, hands-on and other abilities, but also deepen their knowledge and understanding of related knowledge, so chemical experiments must be paid attention to. When doing experiments, you should ask more questions about why, think about how to do it, why you should do it, and how else you can do it, so as to achieve the purpose of "knowing what is happening and why."
In addition, to learn chemistry well, you must also pay more attention to social hot issues and life issues related to chemistry, and be good at combining book knowledge with practice.
In short, as long as the learning methods are correct, I believe students will learn chemistry easily.
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Chemistry is a basic subject of natural science. It is a science that combines theory and application based on experiments.
A strong interest in chemistry learning is a necessary condition for learning high school chemistry well, and the second is to have good learning methods.
1． "Instrumental" knowledge and the conclusions of basic laws must be memorized repeatedly.
We are opposed to blindly memorizing things by rote, but we will never exclude necessary memorization. What is important is that we must choose the content and method of memorization. Such as element symbols, physical properties of substances (such as color, state, solubility, etc.), nuclear charges of elements, periodic laws of elements, mutual conversion of acids, alkalis, and salts, etc., are all must be memorized. The memory method emphasizes memory based on understanding. Through induction, analogy and other methods, we can communicate and connect concepts, compare similarities and differences, and form a conceptual system, thereby deepening memory.
2． Pay attention to chemical experiments, establish three-dimensional concepts, and visualize abstract content.
Chemical experiments, structural models, and physical photos are the material basis for establishing a three-dimensional concept and visualizing abstract chemical content. Chemical experiments work closely with chemical knowledge. It helps us establish and consolidate chemical knowledge, and helps cultivate and improve various abilities such as hands-on, observation, thinking, and reasoning.
3. Strengthen your practice and draw inferences from one example.
In chemistry learning, regular practice should be used to digest knowledge and improve abilities. Practice should be timely and appropriate, and fully adopt various forms such as written answers, oral answers, and experimental operations. It is necessary to repeatedly be exposed to various question types such as selection, fill-in-the-blank, inference, proof, identification, and calculation to consolidate knowledge, train thinking, and develop abilities. It is necessary to give full play to the effectiveness of each question, draw inferences from one example and draw inferences about other cases. Some questions can be solved with multiple questions to develop problem-solving ideas and improve flexibility; some questions can be solved with multiple questions to highlight the essence of the solution and derive the rules of the solution.
4. Overcome psychological barriers and develop test-taking abilities
Examination is an important means to check the mastery of chemical knowledge, and the training and cultivation of test-taking ability is a key part of the success or failure of the exam. Make full use of every test exercise to exercise your ability to overcome psychological barriers and calm down tension. You must consciously make some efforts to control your emotions, control your time, and test yourself. It is necessary to explore problem-solving skills and techniques and flexibly arrange the order of problem-solving according to the difficulty of the problem. Exercise to speed up problem solving. Buy time to review and correct errors.
In addition, I often read some popular science readings on chemistry, use commonly used substances in daily life to carry out small home experiments and small inventions, visit and inspect chemical-related factories, schools, scientific research units, etc., which is very important for students to learn well in high school. Chemistry has its benefits.
Reference materials:
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1. Chemistry subject characteristics and course objectives:
Chemistry is a basic, creative and practical subject. It is a science that studies the composition, structural properties and change laws of matter. It is a science that develops new substances. It is an important foundation for research in information science, materials science, energy science, environmental science, ocean science, life science and space technology.
1. Knowledge and skills: Understand the properties and preparation methods of several common substances, master the basic concepts and basic theories of chemistry, understand the multi-angle classification of substances, understand the diversity and regularity of chemical changes, Able to analyze simple chemical problems and express them in chemical language. Able to analyze the relationship between quantities in chemical problems and learn simple chemical calculations. Understand the scheme design, operation and completion of experimental reports for common chemical problems.
2. Process and methods: Understand the general process of scientific inquiry and initially learn the general methods of scientific research. Understand the law that structure determines properties and properties determine uses, and understand the mission of modern chemistry. Have the ability to collect, process and output special information to solve chemical problems. Learn to improve the efficiency of learning and practical activities and cultivate teamwork capabilities through a combination of independent learning and cooperative learning.
3. Emotional attitudes and values: Understand the development of modern chemistry and chemical industry, understand the important role of chemical knowledge in solving life, production and social problems, improve the consciousness of learning chemistry, and have the ability to participate in the practice of chemical science Be motivated and develop a good learning attitude.
Understand the importance of scientific methods in chemical research, and develop a scientific attitude of seeking truth from facts and a scientific spirit of innovation. Understand the relationship between chemistry and life improvement, production development, social progress and natural ecological protection, and form an awareness and sense of responsibility for the rational use of natural resources and environmental protection.
2. Compared with junior high school chemistry, high school chemistry has the following characteristics:
⒈Conceptual abstraction
Junior high school chemistry is the enlightenment of chemical education, focusing on Qualitative analysis, focusing on image thinking, starts with concrete and intuitive natural phenomena and experiments to establish chemical concepts and laws, allowing students to master some of the most basic chemical knowledge and skills. To a large extent, it is memory-based and lacks the ability to think independently. The cultivation of students is used to acquire knowledge in a passive way. In addition to qualitative analysis, high schools also have quantitative analysis. In addition to image thinking, they focus on abstract thinking. Chemical concepts and laws are established on the basis of abstract thinking, so that students can actively accept and consciously acquire knowledge and develop intelligence. For example, concepts related to oxidation-reduction reactions are both abstract and theoretical. In Chapter 2, molar concepts come one after another, and students are not able to adapt to them for a while. This is a challenge that students face when they enter high school, and it brings a very sharp challenge to teaching and learning. contradiction.
⒉The progress is fast and the reaction equation is complex
The progress of junior high school is slower than that of high school. It takes a long time to learn and consolidate the essential laws, so there is more time to digest them in future studies. After entering high school, the depth, breadth, and difficulty of the teaching content have increased significantly, the progress has accelerated, and the number of chemical equations has increased. Most reactions have lost the reaction rules mastered in junior high school, which increases the difficulty in understanding and mastering. If not digested in time, Students will be quite passive in future studies, such as the laboratory preparation method of Cl2 in the first grade of high school, the reaction of Cl2 with water and alkali, the different situations of the reaction of NaCl and concentrated sulfuric acid to produce hydrogen chloride with mild heat and strong heat, etc. It is difficult for students to understand at the moment. I find it difficult to master, difficult to remember, and not very adaptable.
3. Deep connotation and wide connection
For example, Moore connects the micro and the macro, permeates every chapter of high school textbooks, and plays a foundational role in the entire middle school chemical calculation. Another example is the structure of matter and the periodic law of elements, which are the focus of the entire middle school chemistry. Learning them well can prompt students to summarize and synthesize the knowledge they have learned before, achieve a leap from perceptual knowledge to rational knowledge, and enable students to use the structure of matter , the periodic law of elements as theoretical guidance, explore and study the subsequent chemical knowledge, cultivate analytical reasoning skills, and lay a solid foundation for further learning chemistry in the future.
⒋Catch typical examples and lead a generation
Junior high school chemistry only introduces the properties of a certain element and compound in detail to understand their important uses in production and life, while the high school textbooks use chlorine, Focus on sodium, sulfur, and nitrogen, introduce their substances and important compounds in detail, and study the similarities and changes in their properties by analyzing the similarities and differences in the atomic structures of elements of the same family; use induction and comparison to cultivate students' scientific research methods , this is a characteristic that is different from learning the knowledge of elements and compounds in junior high school.
3. Reasons for students' learning difficulties:
1. Reasons for textbooks
The basic knowledge involved in junior high school textbooks is not theoretical and abstract. Compared with junior high school textbooks, high school textbooks are significantly deeper in depth and breadth, and the characteristics of development from description to reasoning are becoming increasingly obvious. The horizontal connection and comprehensiveness of knowledge have been improved. Research questions often involve the essence, and image thinking has also appeared in ability requirements. A leap toward abstract thinking. Some content such as "More", "Periodic Law of Elements", "Redox Reaction" and other knowledge are highly theoretical and highly abstract. These contents have always been considered to be key knowledge that causes student differentiation and learning difficulties.
2. Teacher’s reasons
Due to the short time for chemistry learning in junior high schools, teachers focus on instilling knowledge into students and grasping progress, but do not pay attention to the cultivation of students’ abilities, resulting in high scores and low abilities; There is no description of common sense introduction and course selection, resulting in knowledge defects; high school teachers do not know much about the characteristics of junior high school textbooks, and often speed up the process without properly handling the connection between the third year of junior high school and the first year of senior high school. Some textbooks are too in-depth and extended, covering all aspects of chemical knowledge, and the classroom is not active, which limits the development of students' thinking and easily makes students feel tired of learning.
3. Reasons for students
The purpose of learning is not clear, the attitude towards learning is not correct, the sense of competition is not strong, the mind is slack, and there is no sense of urgency in learning; stick to the existing learning methods and believe My old habit is to rely too much on the teacher, with poor consciousness and autonomy in learning; I do not follow the general rules and methods of learning activities, and ignore the basic links of the learning process. For example: preview, lectures, review, independent assignments, summary and evaluation, etc. When listening to the class, I could not grasp the important and difficult points of the knowledge and could not understand it thoroughly. Some knowledge is not deeply impressed, causing knowledge defects to accumulate over time;
4. Guidance on high school chemistry methods:
1. Persist in previewing before class and learning proactively
Methods of previewing before class: read new lessons, identify difficult points, and review basics
< p> (1). Read the new lesson: Understand the basic content of the textbook.(2) Find out the difficult points: mark the places you don’t understand.
(3) Review the basics: as a foundation for learning new courses.
2. Pay attention to in-class learning to improve classroom efficiency
Methods for in-class learning: listen carefully to the lecture; take good notes.
(1) Listen carefully to the class: concentrate and learn proactively. When the teacher introduces a new lesson, students should pay attention to how the teacher raises new questions. When the teacher is teaching a new lesson, students should think about how the teacher analyzes the problem. When the teacher is demonstrating the experiment, students should carefully look at how the teacher operates? When the teacher summarizes this lesson, students should be interested in learning how the teacher extracts the key points of the teaching material?
(2) Take good notes: be detailed and take notes appropriately. Some students do not have the habit of taking notes; some students take as much as they can take; some students only take notes without thinking; these are not good. For new lessons, mainly write down the teacher’s lecture outline, key points, and the teacher’s in-depth and enlightening analysis. For the review class, mainly write down the main lines of knowledge extracted under the guidance of the teacher. For exercise review classes, you should mainly write down your own mistakes pointed out by the teacher, or content that is inspiring to you. Either underline key points or mark them in the blank spaces of the book or directly in the book, which will help free up time to listen to the teacher's lectures. In addition, if you have questions about the knowledge learned in class or have unique insights, please mark them so that you can continue to study and study after class.
In-class learning is the key to good study. The most important time for students to study at school is in class. During this most important time of study, some students do not concentrate on studying, and some students do not pay attention to their learning methods, which will greatly restrict the performance of their learning level.
3. Implement after-class review to consolidate what has been learned in class
After-class review is the need to consolidate knowledge. Some students often say this: I basically understand everything in class, but I can’t always do homework easily. The reason is that the connotation and extension of knowledge have not been truly or fully understood. This is exactly what review after class is all about.
The method of review after class is as follows:
(1) Re-reading: Read the teaching materials again after taking the new class, so that you can "learn the new and understand the old" and improve yourself.
(2) "After" homework: Doing homework after reading the textbook will get twice the result with half the effort. Some students did not read the textbook before doing their homework, so they just copied formulas or examples to do their homework, which was half the result with half the effort.
(3) Frequent recall: Commonly used recall methods allow the mind to reproduce the main line of knowledge in the textbook, discover forgotten knowledge points, and read the relevant content of the textbook in a timely manner. It is highly targeted and effective.
(4) Question more: Ask more questions about the key points and difficulties of knowledge and why? It can lead to re-learning and re-thinking, and continuously improve the understanding of knowledge.
(5) Have a plan: arrange your daily extracurricular time; review the content learned in the previous period; it can improve the efficiency of learning.
4. Systematically master knowledge by consciously memorizing
Methods of conscious memorization: deep understanding, natural memorization; summarizing formulas to facilitate memorization; comparing similarities and differences, simplifying memorization; reading and writing Combine and deepen your memory.
Conscious memory is a way to systematically master scientific knowledge. The method of conscious note-taking varies from person to person and is eclectic. Develop a conscious memory method that suits you, so as to systematically master scientific knowledge.
5. Increase extracurricular reading to adapt to the information age
Extracurricular reading is a window to understand the outside world! The outside world is really wonderful. Students should increase their extracurricular reading and continuously broaden their knowledge areas to adapt to today's information age.
Methods for extracurricular reading: choose to read; search online; pay attention to excerpts.
6. Scientific induction
The complete knowledge learning process is divided into three stages, namely the acquisition, maintenance and reproduction of knowledge.
One of the induction methods is the point-line network method. This method is most commonly used in summarizing the mutual conversion relationships between elements and compounds. For example, the chapter "Sulfur" is headed by H2S→S→SO2→SO3→H2SO4.
The second inductive method is the list comparison method. The comparison method is often used to distinguish similar concepts, and the comparison method is also most commonly used to learn the properties of element compounds. Through comparison, the root of new and old knowledge is found. Sex and connection.
The third inductive method is the bond line progression method. There are many basic concepts in high school chemistry, and some important concepts are scattered in various chapters according to students’ understanding rules. This requires our students to focus on sorting out related concepts in a timely manner , according to a certain theoretical system, clarify the subordinate or parallel relationships between basic concepts. In the summary, some specific details can be sacrificed to highlight the main content. "Diligence" and "skill" are the one-leaf ark that leads to the other side of knowledge. The word "qiao" means being good at summarizing.
In the general review stage of senior high school, students are even more required to make similar associations and summaries.
5. Some experiences in teaching:
The teaching process is a bilateral process between teachers and students. As a teacher who plays a leading role, the way he guides students is crucial to their development. Below I offer some personal opinions.
1. Progress step by step, paying attention to the connection between junior high school and high school knowledge. Paying attention to the initial review of chemistry in the first year of high school is a necessary prerequisite for doing a good job in integrating teaching between junior high school and high school. It is necessary to use a review method that combines concentration and decentralization on the premise of finding out the details of the students to repair and sort out the loopholes of the students in a targeted manner. Through re-understanding, re-excavation and further improvement of knowledge, students can learn well. Knowledge and psychological preparation for high school chemistry.
2. Focus on cultivating students’ abilities in classroom teaching
Make full use of heuristic teaching to give students more time and space to think and digest. Adhere to the teaching principle of students as the main body and teacher as the mainstay in teaching activities, so that most students can actively participate to ensure the timeliness of classroom teaching.
3. Strengthen the guidance and training of students' learning strategies and learning methods. Good study habits.
Helping students master basic learning methods is an important routine task. We can study the training methods for students to master basic learning methods according to each link of teaching, such as preview. , listening to lectures, taking notes, doing experiments, doing homework and review summaries, etc., provide guidance according to the characteristics of each link, so that students can form good study habits. Training in this area must be planned and binding to a certain extent. Work hard on the word "strict" and truly implement it to benefit students for life.
4. Strengthen experiments and deepen concepts
High school chemistry has arranged a certain number of demonstration experiments with students. Experiments, and a considerable number of objects, pictures, and models can be used to cultivate and teach students to deepen their understanding of concepts and principles from a large amount of perceptual knowledge through observation. Strengthening intuitive teaching can not only provide students with inspiration and stimulate their imagination. interest, mobilize their enthusiasm for learning, and also make abstract essentials concrete and deepen their understanding and memory of concepts.
5. Grasp the key points, teach them carefully and practice more
In the classroom. Give full play to the leading role of teachers in teaching. We should neither cover everything, be defensive at every step, nor explain in detail and comprehensively. We should also not blindly let students do general exercises and do lectures instead. Instead, we should grasp the key points, apply heuristics, and speak appropriately. Lectures should be practiced. Lectures are to clarify the ins and outs of concepts, principles, and formulas, so that students can grasp the essential attributes through superficial phenomena, and practice to consolidate and apply concepts and laws. Students’ ability to apply what they have learned.
For example, in the molar concentration section, the first is to clarify the definition and derive mathematical expressions; the second is to conduct demonstration experiments to gain perceptual knowledge and deepen the understanding of concepts; the third is to guide and inspire students to master several basic types of molar concentration calculations. Selected exercises to deepen your understanding and mastery of the concept of molar concentration and related topics through exercises.
6. Grasp the typical examples and explore the rules
To enable students to learn high school chemistry well, it is no longer necessary for teachers to teach more and students to do more. An important part is to guide students to grasp Focusing on typical examples and summarizing can enable students to acquire and master knowledge by themselves in a multi-point and wide-ranging chemistry study. For example, by summarizing the rules through one question with multiple solutions or multiple questions with one method, we can teach students the methods and steps for thinking about problems, so that students' thinking can gradually spread, and they can draw inferences from one instance and draw analogies to others, thus achieving twice the result with half the effort.
In short, high school chemistry teaching must not only make a smooth transition from junior high school to high school, so that students can jump over the knowledge level from junior high school to high school, but also make students adapt to the fast-paced and difficult chemistry teaching in high school as soon as possible. Enhance students' confidence in learning chemistry well, improve students' observation ability, experimental ability, thinking ability and self-study ability as soon as possible, thereby improving the quality of chemistry teaching.
Hope it helps you^^
Look at this, every door has it
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