Reflection on the revision class of the ninth gradeThere were many things that needed to be reflected on in Yuan's review class:
1. ** Introduction of revision **: For the revision of the graphics content, if the students draw a circle first and then intuitively review the names of the various parts of the circle according to the drawn circle, the effect would be better than directly asking the learning content of this unit, because it would be more intuitive, especially when there are questions on how to draw a circle later.
2. ** Difficulty of questions and student level **
- ** Fill-in-the-blanks and True or False Questions **: The difficulty should not be too high. More attention should be paid to middle and lower class students. After completing the theoretical questions, the class would read them again to help deepen their memory.
- ** Diagram calculation questions **
- ** Calculation of circumference **: The simple calculation of circumference is easy for students to master, but students often forget part of the calculation content for slightly more difficult questions. During revision, students can be reminded to draw the circumference first before calculating in detail.
- ** Circle Area Calculation **: Students are prone to making mistakes when calculating the area of a ring. There are three situations in a ring, including knowing the radius or diameter of the inner circle and outer circle, knowing the radius or diameter of the inner circle and the ring width, and knowing the radius or diameter of the outer circle and the ring width. However, the revision may only involve the first situation. The second situation is more difficult for the less advanced students to solve the problem.
- ** Problem solving section **: The questions designed are more difficult, such as finding the cross-section area, ring area, and comprehensive questions.
3. ** Overall Class Duration **: Yuan's revision content is suitable to be divided into two classes. The first class will be for theoretical review and basic questions review, and the second class will be for medium and high difficulty questions. This will better suit the class.
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Reflection on the teaching of the revision class of the addition and deduction of the second rootThe following is a reflection on the addition and deduction of the second root:
** 1. Students 'Knowledge Mastery **
1. ** Simple Problem **
- Students had difficulty in decomposing the radical. For example, a number like 32 could not be decomposed into 16 by 2 at once, but into 4 by 8. It could not be decomposed completely. He also couldn't completely understand the decomposition of the numbers 108 and 98. This reflected that the students were not familiar with the decomposition of numbers, which was crucial for the reduction of the second root.
- When the square root was a fraction, the student's grasp was even worse. For example, when the numerator of the root was 8 or 27, many students directly multiplied it by 8 or 27, resulting in a large amount of calculation and easy to make mistakes. In fact, multiplying by 2 or 3 could simplify it. This meant that the students did not understand the simplest method of rational multiplication of the square root.
2. ** Combining the same kind of square root problems **
- When combining the same kind of square root, the students made more mistakes when combining the coefficient, especially when the coefficient was a score. This reflected the students 'lack of knowledge in the calculation of scores and similar terms. The teacher needed to explain more and explain in detail when explaining the step of combining the same kind of square roots.
** 2. Teaching strategy **
1. ** Practice and Test **
- From the perspective of teaching effectiveness, it required more teaching, more practice, and more testing. Currently, only one-third of the students were correct after the test. Under normal circumstances, two-thirds of the students should be correct. If time allowed, they could create a second root topic exam with about 20 questions. They would conduct a second exam for the questions that made a lot of mistakes. They would make up for the mistakes made by the students after the second exam to promote the students 'proficiency in the algorithm.
2. ** Teaching methods **
- In the teaching process, we should pay attention to the application of analogy, such as analogy of similar terms, combination of similar terms, and integral addition and deduction to guide students to understand the definition of similar square roots and the rules of square root addition and deduction. This will allow students to naturally migrate to new knowledge on the basis of existing knowledge, establish the connection between old and new knowledge, and form a mathematical knowledge system. At the same time, by creating a living situation or designing a series of questions as a teaching situation, it can stimulate students 'interest in learning and thirst for knowledge, and improve the effectiveness of classroom teaching.
3. ** Pay attention to the individual aspects of students **
- In the classroom, they should always pay attention to the students 'psychology and students with learning difficulties, and give students appropriate encouragement, enlightenment, and evaluation. For example, when a student made a mistake, such as writing on the blackboard, they had to find other students to provide help in time and guide the students to reflect on the reasons for the mistake. In group studies, students should be encouraged to cooperate and explore independently, so that students can exchange their own opinions and put forward their own opinions for everyone to comment. Teachers should go deep into the group to collect information, guide learning, and give full play to the students 'main role.
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Introduction to the characters of 'Global Star-Making'The characters included the male lead, Zhang Xiaole, the female lead, Liu Wanyi, and the female lead, Song Zhiyi.
The author of "Global Star Creation" was "Bone Bone Becomes Spirit." It was an urban/urban supernatural novel.
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I hope you will like this book.
Global Class Advancement SSS-level CultivatorThe Global Class Advancement SSS-level Cultivator was a novel by an arrogant polar bear. The story took place in a world where the strong preyed on the weak, and the living space of humans was constantly squeezed. Everyone would awaken their own innate profession, and the protagonist, Chen Fan, had awakened the A-level profession, Spirit Qi Master. However, reiki professions could not become strong in this world. However, just when Chen Fan thought that his life was over, his golden finger was activated and he was promoted to an SSS-level cultivator. This novel has been completed, with a total of 682,755 views.
Global Sprite Trainer draws S-class Mask" Global Spirit Trainer: Drawing S-Class Mask at the Beginning " was a fantasy magic novel written by San Shi. The background of the story was set in an era when a cosmic storm struck and the world's reiki was recovering. Human civilization was threatened, but the appearance of Spirit Trainers changed the situation. They could control the power of Spirit Taming and seal the mutated beasts in their bodies, launching a counterattack and establishing 36 roaming cities. The protagonist of the novel obtained powerful skills and abilities by drawing an S-level mask at the beginning of the game. The specific plot and chapter content can be read on the relevant novel website.
Why hasn't China become a world-class big shot like Hawking yet?There were many world-class celebrities like Hawking in China, such as the famous physicist Stephen Hawking, an academician of the Chinese Academy of Sciences.
Hawking was an outstanding physicist who proposed many important theories about the universe and black holes. He was hailed as one of the greatest scientists of his generation. His research fields include astrophysics, cosmos, mathematics, relativity, and quantum mechanics. His research achievements in these fields have a high international reputation.
In addition to Hawking, there were also many Chinese scientists and scholars who had a high reputation in the international academic community, such as the academician of the Chinese Academy of Sciences, the famous mathematician Shiing-Shen Chern, the famous physicist Wu Wenjun, and the famous mathematician Qiu Chengtong.
Although China's scientific research and development had made great progress, there was still a certain gap compared to the world's leading level, especially in some important fields such as cosmos, quantum physics, and high-energy physics. However, with the increase in national support and investment, China's scientific research and development were gradually strengthening. It was expected that more world-class big shots would emerge in the future.
Why hasn't China become a world-class big shot like Hawking yet?There were many outstanding scientists in China, but not every Chinese scientist could become a world-class big shot like Hawking. There were several reasons for this:
China's science education level is relatively weak. Although China's science and technology were developing rapidly, the level of science education was relatively low. China's education system emphasized theoretical knowledge and lacked practical ability. This made it difficult for many Chinese scientists to become world-class big shots due to their lack of experience in experiments and research.
2. The variety of scientific fields. Different from the western scientific system, the Chinese scientific system was mainly based on ancient Chinese philosophy and cultural traditions, lacking the variety and tolerance of the scientific field. This also made it difficult for Chinese scientists to explore new scientific fields and become world-class big shots who had made important contributions to many scientific fields like Hawking.
3. The improvement of scientific literacy. Scientific literacy was the foundation for a person to explore scientific knowledge and ability. The improvement of scientific literacy in China was relatively slow, which also led to the fact that Chinese scientists did not perform as well as Western scientists in the scientific field.
It should be pointed out that China also has many outstanding scientists whose achievements are highly recognized around the world. The level of science education in China was constantly improving, and the achievements of Chinese scientists in the future would be even more outstanding.
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