Reflection on the Teaching of Mathematical Calculation Unit
The following are some of the main points of reflection on the teaching of different mathematical calculation units: ** One, two digits plus one digit (carry) Reflection on the teaching of mental arithmetic (Grade 1, Volume 2)** 1. ** Achievement of teaching objectives ** - Knowledge and ability goal: Through the introduction of the situation, it is feasible to let the students understand the meaning of addition and master the method of two-digit plus one-digit carry calculation. For example, when solving the problem of "How many signs are there in class one", the students could calculate according to different methods, such as using a small stick to put it down, decomposing the numbers, etc., indicating that they had mastered the calculation method on the basis of understanding the meaning of addition. - The process and method goal: In the exploration of new knowledge, let the students experience the process of independent thinking, using learning tools to calculate, communicating algorithms, etc., and realize the variety of algorithms. However, more guidance and practice might be needed to guide students to choose the best algorithm. Some students might still not understand why some algorithms were better. - Emotions, attitudes, and values: Infiltrating environmental awareness in the situation of planting trees and listing them, and cultivating cooperative awareness in the process of cooperative exchange of algorithms is effective. However, increasing confidence in learning mathematics might require further practice and feedback, such as giving more encouragement and personal guidance to students who were slow or error-prone. 2. ** Breakthrough in teaching difficulties ** - The key was to master the two-digit plus one-digit carry calculation method. Through the demonstration and comparison of various algorithms, most students could master them. However, for some students with weaker comprehension abilities, they might have difficulty understanding the concepts of one out of ten. They needed more examples and one-on-one tutoring. - Difficulties and key points overlapped. Some intensive exercises could be added in the teaching, such as setting up special carry and non-carry addition comparison exercises to deepen the students 'understanding of the characteristics of carry addition. 3. ** Teaching methods ** - The introduction of the new lesson used the mental calculation card to review the addition of 20, which made a good foundation for the new lesson. However, in the part of guiding the students to ask questions, more guidance and examples could be given to let the students ask more quality questions. In the process of solving problems, the method of using learning tools was very helpful for some students to understand the calculation process, but for students with strong abstract thinking, it could provide more challenging problems or expand the practice. 4. ** Homework design ** - The homework design allowed the students to go home and tell their parents about the day's learning content and carry out calculation exercises. This method could strengthen the students 'knowledge and the learning exchange between parents and children. However, some layered assignments could be added to meet the needs of students of different learning levels. For example, students who had the ability to learn could design some expanding mental arithmetic problems or simple math inquiries. ** 2. Reflection on Teaching after Calculating Time (3rd Grade Volume 1)** 1. ** Achievement of teaching objectives ** - Knowledge and Skills goal: Using life situations (such as calculating the time from home to school) to let students understand the concept of calculating time, to a certain extent, it is successful. Most students could understand the meaning of calculation through real-life examples. However, due to the special nature of the time, minute, and second rate, some students might still be confused in actual calculations. They might not be familiar with the situation where time exceeded a cycle (such as calculating across hours). - The process and method goal: By allowing students to explore independently and then exchange feedback, the students 'subjective initiative is fully exerted. Most students could understand the clock face model and the number axis, but they might need more practice to skillfully use these tools to solve different types of elapsed time calculation problems. - Emotional attitude and values: In the process of teaching, students 'interest in learning is stimulated. However, in terms of cultivating students' perseverance and patience to solve problems, it may need to be further strengthened in subsequent teaching. This is because it is difficult for some students to calculate the time, and it is easy to cause frustration. 2. ** Breakthrough in teaching difficulties ** - The main point was to let the students understand how to calculate the time. The intuitive teaching using the clock face model and the number axis had a certain effect on breaking through the key points. However, during the teaching process, it was found that when the specific clock face and the abstract number axis were combined to understand, some students had difficulties and needed more detailed explanation and more practice. - The difficulty lay in the fact that the rate of progression between hours, minutes, and seconds was 60, and the calculation complexity brought about by the local period of time depicted by the clock. Although there were many ways to explain it in teaching, it was still difficult for some students with weak spatial imagination and logical thinking to fully grasp it. They might need to design some more targeted special exercises. 3. ** Teaching methods ** - Creating real-life situations was an effective teaching method, but when guiding students to abstract mathematical models from specific situations, they could pay more attention to the decomposition and guidance of steps. In terms of visual aids, in addition to the clock model and the number axis, he could also consider adding some animation demonstration or interaction teaching resources to enhance students 'participation and understanding. 4. ** Homework design ** - The homework should be designed in layers. For students who have difficulty understanding, they can design some basic and targeted exercises, such as calculating the elapsed time given a simple time interval. For students who had the ability to learn, they could design some questions that involved the conversion of multiple time units and complex time periods to meet the needs of students at different levels. ** III. Reflection on the Teaching of Mixed Operations with Parentheses (Second Year Volume 2)** 1. ** Achievement of teaching objectives ** - Knowledge and Skill Target: By reviewing old knowledge (the first grade's mixed order of addition and substitution with parenthesis), new knowledge (the two-level mixed order of operations with parenthesis) will be introduced. This method will help students transfer knowledge. Most of the students could grasp the order of the mixed operations with small parenthesis and calculate them correctly. However, in some complicated comprehensive calculations, they might forget to calculate the parenthesis first, so more intensive practice was needed. - "Method and process objective: Different processing methods are used in the practice session, such as off-the-shelf calculation, comparison observation, and comprehensive calculation according to the calculation process. It helps to cultivate students 'calculation ability, observation ability, and logical thinking ability. However, in the process of the students 'independent practice, it was found that some students could not summarize the function of the parenthesis from the comparison exercise well, and the teacher needed to guide them more carefully. - Emotional attitude and values goal: In the classroom summary section, the teacher summarized the order of the four operations in a doggerel way to increase the interest of the classroom. However, in the entire teaching process, in terms of cultivating students 'rigorous attitude towards mathematics, he could pay more attention to details in the marking of homework and classroom feedback, correct students' small mistakes in time, and let students develop a serious and careful habit. 2. ** Breakthrough in teaching difficulties ** - The main point was to understand and master the order of the mixed operations with parenthesis. Through different levels of practice, the students could basically master it. However, in practical application, they might be disturbed by the non-bracketed mixed operation order that they had learned before, and more discriminative practice was needed to strengthen their memory. - The difficult part was to let the students use the calculation sequence flexibly to solve practical problems. If the students were found to be lacking in this aspect, they could be guided to analyze the relationship between the numbers in the questions, understand why they had to calculate the numbers in the bracket first, and add some practical exercises. 3. ** Teaching methods ** - It was effective to review old knowledge to introduce new knowledge, but it could be added to the review session to increase some interaction, such as letting the students give examples to explain the order of addition and addition mixed operations with parenthesis. During the practice session, they could increase the way of group cooperation, allowing students to check and explain to each other to improve the learning effect. 4. ** Homework design ** - The homework design could be more diverse. In addition to written calculation exercises, some practical homework could be added, such as letting students write mixed calculation questions with small parenthesis and solve them together. This could deepen the students 'understanding of the order of operations. At the same time, they could also provide individual tutoring and assign assignments according to the students 'homework. ** IV. Reflection on the Combination Law of Multiplication and Commutational Law (Grade 4, Volume 2)** 1. ** Achievement of teaching objectives ** - Knowledge and Skill Target: In the context of solving practical problems such as the calculation of flower soil and flower fertilizer weight, the student will be able to derive the law of multiplication and the law of exchange. The student will be able to perceive the law in the specific context. However, when students were asked to use letters to represent operational laws, some students might make mistakes in the writing of letters or have an incomplete understanding of the meaning of letters. More examples and explanations were needed. - "Method and process goal: During the process of cooperative exploration, students will experience mathematical methods such as guessing, induction, and comparison through solving problems, reporting, and communication. However, it might be difficult for students with weak logical thinking ability to induce the association law and the commutativity law. Teachers needed to guide them more patiently to help them understand the induction process from specific examples to abstract laws. - Emotional attitudes and values goal: In the process of exploring operational laws, it is a long-term goal to cultivate reasoning skills by letting students experience the relationship between the various parts of multiplication and division. In this class, although the students had a certain degree of reasoning awareness, it needed to be continuously strengthened in the future. For example, it could be cultivated through more expansion exercises and mathematical inquiry activities. 2. ** Breakthrough in teaching difficulties ** - The key is to understand the law of multiplication and the law of multiplication and be able to use the law of operation to perform simple operations. In the teaching, he found that students could basically grasp the concept of the operation law, but when they used the operation law to perform simple operations, they might not be able to find a suitable combination or exchange method, so they needed more targeted practice. - The difficulty was to use letters to represent the multiplication law and apply it to practical problems. In teaching, the explanation of the operational law of letter representation needed to be more in-depth. For example, students could understand the equality of different forms of letter expressions by comparing them. In the application of practical problems, more examples could be added to help students analyze when and how to use the operational law. 3. ** Teaching methods ** - In the creation of the situation, it was effective to guide the students to ask questions through the situation of purchasing flower soil and fertilizer, but it could allow the students to participate more in the creation of the situation. For example, let the students design similar shopping situations and ask related mathematical questions. In the cooperative exploration segment, the interaction between students could be more in-depth. In addition to reporting the results, it could increase the discussion and questioning sessions within the group to improve the depth of the students 'thinking. 4. ** Homework design ** - The homework design could add some open-ended questions, such as asking students to find the application examples of the association law and the commutativity law in their lives and explain them. At the same time, the practice of the operation law could be gamified, such as making cards for the multiplication operation law, allowing students to play games such as matching and filling in the blanks to increase students 'interest in learning and mastery of knowledge. Read more exciting novels for free
Cultural Relics and Art History Professional Catalog
From the reference materials, it was only found that the 2015 PhD student enrollment major of Sichuan University's School of History and Culture had the major of cultural relics and art history. The tutor was Huo Wei. The examination subjects were: (1) 1001 English,(2) 1002 Japanese,(3) 1003 Russian,(4) 1004 German, or (5) 1005 French;(2) 2026 General Theory of Archeology;(3) 3033 Ancient China History. There was no more information about the cultural relics and art history professional catalog, so it was impossible to provide more comprehensive information. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
How can a case be filed when the Internet is involved in prostitution
The following requirements must be met: 1. [Object element: Infringing upon the state's management of obscene articles.] 2. [The objective requirement is to spread obscene books, films, videotapes, audiotapes, pictures, or other obscene materials, and to achieve serious behavior.] For example, producing, copying, publishing, selling, and distributing more than ten obscene movies, performances, animations, and other video files; producing, copying, publishing, selling, and distributing more than 50 obscene audio files; producing, copying, publishing, selling, and distributing more than 100 obscene electronic journals, pictures, and articles; producing, copying, publishing, selling, and distributing obscene electronic information that has actually been clicked more than 5,000 times; To publish, sell, or spread obscene electronic information in the form of membership, with more than 100 registered members; to collect advertising fees, membership registration fees, or other fees by using obscene electronic information, with an illegal income of more than 5,000 yuan. 3. Principal element: The principal is a natural person who has reached the legal age of criminal responsibility and has the ability to be responsible for criminal matters. 4. Subjective element: It is intentional in the subjective aspect, and the perpetrator does not have to do it for profit. The novel," Deaths from domestic violence, I went crazy from the bullet comments ", is equally exciting. Everyone is welcome to click and read it!
He Sui and various celebrities took photos
At present, there were photos of He Sui and celebrities: He Sui and Yang Mi, Zhang Binbin, Zhang Yunlong, Zhang Yu, Wang Ju, etc. when they participated in the SW-event; Zhang Tianai's photo with He Sui and Wang Dalu. In the photo, He Sui and Zhang Tianai hugged each other tightly, and Wang Dalu blinked and smiled behind them; and He Sui and Chen Weiting's sweet photo. However, he did not find the specific content of these photos. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Chapter Index of Wen Yuwei and Shen Siyu's Fictions
Wen Yuwei and Shen Siyu had 24 chapters in total. The chapter table of contents included " Mrs. Shen is not worthy "," She finally let her child enter the ancestral tomb "," The person he missed has finally returned ", etc. However, the complete chapter table of contents was not given. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The feeling of OCD acting up
When OCD acted up, it would bring about many painful feelings. The first is psychological distress. The patient may be disturbed by strong, persistent, and invasive thoughts, impulses, or images. He may feel that he cannot control these thoughts, resulting in frustration, anxiety, and helplessness. For example, some forced behaviors (such as washing hands repeatedly, switching lights on and off a specific number of times, etc.) may consume a lot of time and energy, affecting the patient's other normal activities. In terms of social interaction, patients may feel embarrassed, ashamed, or afraid of what others think of their symptoms, thus avoiding social occasions or interacting with others. From the perspective of psychological stress, persistent obsessive-compulsive disorder symptoms can cause patients to feel tired, anxious, and depressed. This stress not only affects emotions, but also affects behavior and physical health. In addition, the patient may also develop self-doubt and be uncertain about his thoughts, actions, and feelings, further increasing his frustration and helplessness. In short, when OCD acted up, there was nothing but pain. While waiting for the anime, you can also click on the link below to read the classic original work of The King's Avatar!
Black Wukong Animation Plot Analysis
The Dragon Ball series had an animated plot involving Black Goku. In Dragon Ball Super's Black Wukong chapter, Zamas, the candidate of the tenth universe's Realm King God, had a distorted personality and was a combat genius. He had a strong sense of self-esteem and was resentful after losing to Sun Wukong in the seventh universe. After learning about the Ring of Time and the Super Dragon Ball, he stole the Ring of Time and went to another time and space to collect the Super Dragon Ball to summon the Super Divine Dragon. He realized his wish to swap bodies with Sun Wukong in that time and space and became Black Wukong. Then, he joined forces with Zamas of Datu's space-time to start the human extinction plan. Black Wukong chased after Datu, and Buma was killed. Datu went to the main space-time to ask Wukong for help. They went to Datu's space-time to fight Black Wukong together. Black Wukong had the ability of a Saiyan because his body was the Sun Wukong. During the battle, he comprehended new powers and transformed into the Rose-red form. The two Zamas fought to the death with Goku, Vegeta, and the others in the main storyline. Black Goku and Zamas combined to form the final BOSS, Zamas, through the Portara Earring. Although Super Blue Becket appeared, he could not defeat it. In the end, he relied on the whole king to destroy this big boss. Among the Dragon Ball Heroes, Black Goku's popularity had risen since his debut. He had traveled through time and space many times to improve his strength. He had killed 99 Goku, including the beginner level of the Ultimate Freedom Skill, until he met the main space-time Goku and saw the beginner level of the Ultimate Freedom Skill. This time, Goku sent Black Goku to hell with the help of Dales. Not satisfied with the game? You can read the novel related to Black Myth: Wukong to understand the exciting plot!
Antique Jade Artifacts
Antique theme jade was a common type of modern jade production. From the point of view of the purpose of production, one could not simply regard all antique jade articles as fakes. Many of the modern antique style jades were not intended to impersonate the ancient jade of a certain dynasty. This kind of jade, which was called "new life" in the jade industry, had a unique position in the market. It was very different from the fake ones that were intended to impersonate ancient jade. However, the situation in the antique jade market was complicated. On the one hand, low-end antique jade was mostly sold on the street, targeted at newcomers who had just entered the ancient jade circle and lacked eyesight and funds. Most of these goods were made of garbage materials and sold wholesale after simple carving. They were often accompanied by fabricated stories, such as " three-piece set at the construction site ". Although the profit per piece was low, due to the large quantity, they could still earn a lot of profit. On the other hand, with the development of technology, there were high-quality imitations that were targeted at experts with a certain level of insight. The person who made the high-quality imitations might be an expert in ancient jade. They used old materials, according to the traditional style of the collection, using a combination of machines and handwork, or even self-made tools to make antique jade. They could reach a 90% degree of authenticity, thus misleading many players. In the aspect of identifying ancient jade, there were many ways to fake ancient jade and they were kept secret. For example, the imitation of Blood-seeping Jade could be done by placing the jade in the mud made of pig's blood and yellow soil to form the appearance of soil biting and blood-seeping. To imitate soil rust, one could bury the rubber-coated jade in the yellow soil mud. To make the old look new, one could heat wax on the old jade. There were two ways to make black spots on ancient jade. One was to burn the boiled jade on an iron grill while touching wax oil. The other was to wrap the jade with wet cotton and slowly roast it with water repeatedly after making it in the ancient method. There was also the old method of extracting oil, using the red light grass juice and sand to marinate the new jade texture, then roasting it with bamboo fire to make the Blood Jade to confuse the experts, etc. In addition, for some jade articles that were difficult to judge, such as jade articles in the Hongshan culture style, it was difficult to judge whether they were authentic from the Hongshan culture period, antique jade articles with the Hongshan culture style, or modern antique jade articles just by appearance. This required in-depth research and discussion. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
White Deer Zhang Linghe's two towers are solid?
Bailu Fang had already issued a single statement, saying that Ms. Bailu was single. This was to refute the rumors of her relationship with Zhang Linghe. Although there were many rumors about the two of them living together and their families knowing about their relationship, none of them had been confirmed. Moreover, from the White Deer Group's statement, the two of them had no romantic relationship. There was no so-called " real hammer." While waiting for the TV series, he could also read the exciting content related to this site!
When you are lost, go to the market to see how to write an English essay
When You Are Confused, Go to the Vegetable Market **I. Introduction** The vegetable market is a very special place. It is not just a place for buying food, but also a place full of the flavor of life. When one is in a state of confusion, going to the vegetable market can be a very enlightening experience. **II. The Lively Scene in the Vegetable Market** 1. **Diverse People** - In the vegetable market, there are all kinds of people. There are old grandmothers who carefully select fresh vegetables, they might haggle with the vendors over a few cents, showing their shrewdness in life. There are also young office workers who come here after a tiring day at work. They quickly pick some ingredients for their dinner. These people from different age groups and backgrounds gather here, each with their own stories. 2. **Abundant Goods** - The variety of goods in the vegetable market is amazing. There are fresh green vegetables, such as tender spinach and crispy cucumbers. There are also all kinds of meats, like the red - fresh beef and pink pork. Seafood is also not lacking, with shiny fish and lively shrimps. The colorful fruits are neatly arranged, from bright red apples to yellow bananas. All these goods are displayed in front of people, showing the richness of life. **III. The Inspirations from the Vegetable Market** 1. **Sense of Reality** - When you are in a state of confusion, the vegetable market can bring you back to reality. Here, people are busy with the most basic things in life - buying food to feed themselves and their families. You can see that everyone is living earnestly. The simple act of buying and selling makes you realize that life is made up of these small and real things. You need to face the real life and not be lost in confusion. 2. **The Persistence of Life** - The vendors in the vegetable market are also a great source of inspiration. They get up early every day to prepare the goods, and they patiently wait for customers. No matter how difficult the business is, they still persevere. Their hard work and tenacity can make you understand that in life, no matter how confused you are, you should keep going and not give up easily. **IV. Conclusion** In conclusion, when you are confused, going to the vegetable market is a very good choice. It can let you see the real life, feel the warmth and tenacity of life, and help you get out of confusion and face life more bravely. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Relics Discovered in Guo Town
There were many cultural relics found in Guo Town. Among them, the "Guo Ji Zi White Plate" discovered during the Daoguang period of the Qing Dynasty was unearthed in Baoji City, Shaanxi Province (Baoji County of Fengxiang Prefecture in the Qing Dynasty), which belonged to the area where Guo Town was located. In recent years, cultural relics such as "He Zun" were also unearthed. A national treasure bronze ware, He Zun, was unearthed on the plateau of Jia Village in the northwest of Guo Town, providing rare physical information for the study of history. In addition, there were also unearthed cultural relics such as the Sanshi Plate, the Qin Gong Bell, and the Qin Gong Bo. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>