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A summary and reflection of simple calculations in life

A summary and reflection of simple calculations in life

2026-09-16 20:54
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Simple calculations were very important in life. Not only could it improve computational efficiency, but it could also achieve twice the result with half the effort when solving practical problems. The following is a summary and reflection of simple calculations in life: * * 1. Simple calculation method summary ** 1. * * The application of arithmetic laws ** - * * Commutative law and association law of addition **: Commutative law of addition, a + b = b + a, and association law of addition, a + b = a + b + c. For example, when calculating the change for shopping, if there are multiple prices added together, the calculation order can be adjusted according to these two laws. For example, if you buy a product worth 3, 5, or 2 yuan and pay the cashier 10 yuan, you can first calculate the change as 3 + 5 = 3 + 5 = 10 yuan, and the change is 0 yuan. - * * Commutativity, Association, and Assignment ** - Commutative law of multiplication <(a × b) × c = a × (b × c)>It can be used to calculate the total price of the goods in batches. For example, if there are 20 apples in each box, each apple will cost 3 yuan. The total price of buying 5 boxes can be calculated as 20 yuan. - Multiplicational distribution law ((a + b) × c = a × c + b × c) and its variant (a × (b + c)= a × b + a × c). For example, the monthly water and electricity bill of the family is calculated. The water bill is RMB 2 per ton, the electricity bill is RMB 0.5 per kWh, and the monthly water consumption is RMB 10 per ton, and the electricity consumption is RMB 20 per kWh. The total cost is RMB 25. 2. * * Use of special number combinations ** - For example, combinations such as <2> and <5>,<25> and <4>,<125> and <8>. Calculating how many milliliters of water can a cubic container with a volume of 125 cubic centimeters hold (The density of water is 1 g/cm 3, and 1 cubic centimeter is equal to 1 milliliter). The density of water is known to be 1 g/cm 3, and the volume of 125 grams of water is 125 cubic centimeters, which can be calculated according to the formula of 1000 × 0.125 = 125 milliliter. 3. * * Method of extracting common factor **: When there are no identical numbers in the formula, but there is a numerical relationship between the numbers that is 10 or 100 times, the common factor can be extracted after transformation using the principle of product invariable. For example, when calculating the proportion of the family's annual expenditure, if the food expenditure is 3140 yuan, the entertainment expenditure is 720 yuan, the transportation expenditure is 430 yuan, and the total expenditure is 1500 yuan, calculate the sum of the proportion of the expenditure to the total expenditure. It can be converted to [3.14 × 1000 + 7.2 × 100 + 4.3 × 100 - 1500 =(3.14 × 1000 + 3.14 × 200 + 3.14 × 100 - 3.14 × 500)= 3.14 × (1000 + 200 + 100 - 500)], which can simplify the calculation process. 4. * * Borrowing and Returning Method **: If you calculate the value of [99 + 999 + 9999], it can be converted to [(99 + 1)+(999 + 1)+(9999 + 1)-3 = 100 + 1000 + 10000 - 3 = 11100 - 3 = 11097]. This method was relatively simple when calculating the addition of numbers close to the whole ten, hundred, and thousand. 5. * * Splitting Method **: For example, if you calculate <12.5 × 32 × 25>, you can split <32>> into <8 × 4>>, then <12.5 × 32 × 25>=(12.5 × 8) × (4 × 25)= 100 × 100 = 10000>. It might be used to calculate the number of combinations of some items in life, such as calculating the total volume of a cuboid combination of length, width, and height. 6. * * Using a benchmark number **: Find a more balanced number in a set of numbers to represent this series of numbers. For example, to calculate the average length of time a family member watches TV every day in a week, they are respectively 1 hour, 1.5 hours, 2 hours, 0.5 hours, 1.2 hours, 1.8 hours, and 2.2 hours. You can choose 1.5 hours as the reference number, then calculate the difference from the reference number, and then calculate the average difference. Finally, add the reference number to get the average length. 7. * * Substitution Method (Alphabet Substitution Method)**: When calculating a complex formula, letters are used to replace a part of the formula, making the calculation process simple. For example, when calculating some complicated financial income calculations, if the formula was more complicated, a part of it could be represented by letters, simplified, and then substituted into the specific numerical calculation. 8. * * Split Item Elimination Method **: This is commonly used in score calculation. First, the items in the formula are split into the sum or difference of two or more numbers. After splitting, the items can be offset. For example, in calculating the allocation of resources according to the ratio, it might be used if it involved the complex calculation of scores. 9. * * Transformation reduction method **: In the four operations, reduction is a common step. If you can't directly reduce the score, you can change the form by making up the number or splitting the number. For example, when calculating some composition ratio problems, this method might be used to simplify the calculation. * * 2. Reflection on Simple Operations ** 1. * * Teaching and Learning ** - For students, the multiplication distribution law was difficult to learn. There were many variations in its application. In the teaching process, many methods were needed to help students understand. For example, he could use a classification summary, a large number of exercises, and visual expressions to assist in teaching, but even so, students might still be confused when they applied the comprehensive application. This meant that the teaching method still needed to be constantly explored to adapt to the students 'cognitive characteristics. - When learning simple calculations, students might master each method well when they learned it separately, but there would be problems when they applied it together. This required more comprehensive practice to improve the students 'ability to distinguish and apply various simple calculation methods. 2. * * In terms of practical application ** - In daily life, many people might not fully realize the advantages of simple calculations and still use more complicated calculation methods. For example, when calculating the total price of a purchase, change, or calculating the proportion of a family's income and expenditure, if one could skillfully use simple calculations, they could save time and improve efficiency. - The ability to perform simple calculations needed to be constantly cultivated and improved. In some complex life scenarios, such as financial planning, project budget, etc., which involved a large amount of data calculation, simple calculations could reduce calculation errors and improve the accuracy of decisions. Read more exciting novels for free

Life navigation course summary and reflection

Taking the life science navigation course of Ocean University of China as an example, this course had the following characteristics and could be summarized and reflected: ** 1. Course content ** 1. ** Comprehensiveness and focus of knowledge imparting ** - The course was paved with extensive knowledge. For example, the Harvard University teaching plan emphasized that students should first accumulate extensive knowledge before seeking "excellence" and "specialization." There were also in-depth explanations of key contents, such as the position of genetics in life sciences as the focus of the lecture, making it clear that genetics was the core discipline of life sciences, and demonstrating through examples such as seed selection and breeding in food security could not be separated from genetics. 2. ** Combination with cutting-edge research ** - The teacher introduced the progress of marine biotechnology at home and abroad, and shared the research results of his team's detailed map of scallop genomes completed in 2017, so that students could understand the cutting-edge knowledge of the subject and help stimulate students 'interest and pursuit of scientific research. 3. ** Integration of Humanistic Spirit ** - By telling the achievements and stories of Mendel, Johnson, Barbara McClintock, Tan Jiazhen, and other famous Chinese and foreign scientists, not only did they impart scientific knowledge, but they also passed on the spirit of scientific pioneers pursuing and discovering truth in difficult and complicated environments. It made students realize that scientific achievements could not be separated from spiritual support, which was helpful in cultivating students 'scientific spirit. 4. ** Connection with real life ** - Starting from the importance of life science to mankind, the proportion of life science problems published in the 125th anniversary of the publication of Science was displayed to show the increasing importance of life science to mankind. They also introduced marine creatures such as tridacna, sea snails, Arctic clams, and lighthouse jellyfish from the perspective of their living environment and habits, so that students could feel that life science was closely related to life. ** 2. Teaching Method ** 1. ** Interactivity ** - There were eight "eye-catching" questions in the classroom, such as "Support or oppose genetically modified organisms?" "Is a person's temperament related to genetics?" Waiting could instantly ignite the interest and enthusiasm of the students and encourage them to speak enthusiastically. Moreover, the teacher would respond positively when the student spoke. For example, when the student stood up to speak, the teacher would hand over the microphone. When the student was nervous, the teacher would smile and encourage the student. This kind of highly interacting teaching method helped to increase the student's participation. 2. ** Guiding ** - The course guided the students to think and learn in various ways, such as recommending books such as " Biophysics: Energy, Information, and Life "," Life Problems: An Evaluation of Modern Biological Thoughts ", and " The Selfish Gene ". It told the students that they had a China heart, had an international outlook, had comprehensive abilities, and practiced one move well. It provided guidance for the students 'learning and future development. ** 3. Course Effect ** 1. ** Student's learning experience ** - From the feedback of the students, for example, Zhang Chengjing, a student of Class 4 of Biological Sciences in Grade 2020, thought that this class was a combination of knowledge, interest, and education. It had temperature, depth, breadth, and high gold content. It was a professional navigation "golden class". This showed that the course had achieved good results in terms of knowledge imparting, ability cultivation, and value guidance. 2. ** Incentives for students ** - For example, Ding Yixuan, a student from Class 1 of the 2020 Biological Sciences course, felt very motivated after hearing the story of the great scientist. This showed that the course had an obvious motivational effect on the students, and it could stimulate the students 'yearning and pursuit of scientific research. However, in other types of life navigation courses, there might be some areas that needed reflection and improvement. For example, the teaching content might be too difficult or too difficult for some students; the interaction in the teaching method might be unbalanced in some cases, such as a cold silence or a student-led discussion; the updating speed of the course content might not keep up with the rapid development of life sciences. To address these possible problems, the curriculum design could be further layered to adapt to different levels of students, and the organization of the interaction segment could be optimized to ensure that every student could participate effectively. Teachers should constantly pay attention to the cutting-edge developments of the subject and update the course content in a timely manner. " The Island of Life " is also a wonderful novel. Everyone is welcome to read it!

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2026-07-24 13:37

Simple and cheerful rhythm middle class music lesson plan and reflection summary

The following is a simple and cheerful music lesson plan for the middle class and a reflection summary example: ##1. Teaching Plan ###(1) Activity Target 1. Guide children to feel the rhythm of cheerful music and improve their sense of rhythm. 2. Children are encouraged to actively participate in rhythmic activities and develop their body coordination. 3. Stimulate children's interest in music activities and experience the joy brought by music. ###(2) Event preparation 1. Choose a cheerful piece of music, such as "Happy Clap Song." 2. It was a spacious activity space. ###(3) Activity process 1. to lead - The teacher played a short prelude to the cheerful music to attract the attention of the children. He asked the children how they felt when they heard the music, such as,"Children, what do you want to do after hearing the music?" 2. Feel the rhythm of the music - Play the music in its entirety and let the child sit quietly in the seat. Feel the overall rhythm of the music and gently swing his body. - When the music was played again, the teacher guided the children to clap their hands to the rhythm of the music to get a preliminary feel of the cheerful rhythm of the music. 3. Simple Rhythmic Movement Teaching - According to the rhythm of the music, the teacher demonstrated a few simple rhythmic movements, such as nodding, stamping, twisting, etc. - He broke down the movements for the child one by one and let the child imitate the practice. He started with a slow rhythm and gradually accelerated to the rhythm of normal music. - The teacher guided the child to combine several movements and perform a complete rhythmic performance with the music. 4. creative rhythm - Children are encouraged to use their imagination to create new movements that match the rhythm of the music. - Invite some children to show their creative movements and let the other children learn together. 5. Group Rhythmic Performance - All the children performed rhythmically to the music. The teacher could guide and encourage the children to enhance their self-confidence. ##2. Reflection and summary ###(1) Strengths 1. In terms of achieving goals, - Most of the children could actively participate in the activity and feel the rhythm of the cheerful music. In the learning of rhythmic patting and rhythmic movements, the sense of rhythm was improved to a certain extent. Through the creative rhythm segment, they developed their imagination and physical coordination ability, and basically achieved the goal of the activity. 2. teaching process - The introduction session successfully attracted the attention of the children and laid a good foundation for the follow-up activities. In the movement teaching segment, the method of decomposing the movements helped the children gradually master the rhythmic movements. The teaching process from simple to complex was in line with the learning characteristics of the middle-class children. The creative rhythm segment stimulated the initiative and creativity of the children, and the children showed high interest. 3. Infant performance - The children showed high enthusiasm in the activities and had a good grasp of the rhythm of the music, especially in the group performance segment. The children imitated and learned from each other, enhancing the sense of teamwork. ###(2) Deficiency 1. The attention of individual children - During the activity, there were some children who were introverted or had a slow perception of the rhythm of music. Their participation was not high, and the teacher did not give them enough individual guidance. 2. music selection - Although the Happy Clap Song was more cheerful, it might lack some novelty. You could choose more diverse music to meet the different needs of children's music experience. ###(3) Enhancement measures 1. For individual children - In future activities, more attention should be paid to the needs of individual children, and they should understand the situation of children in advance. For children with weak rhythm or introverted personality, they should be given more patience and individual guidance, such as guiding them to feel the rhythm of music one-on-one and encouraging them to participate in the activities bravely. 2. music material - The choice of rich music materials, in addition to the classic cheerful songs, could also introduce some cheerful music with different cultural characteristics, or modern pop music for children to broaden the children's musical horizons and increase the fun of the activity. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

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2026-08-16 09:07

Course summary and reflection

The following is an example of a summary and reflection of the class report: ##1. Course summary ###(I) Achievement of the course objectives 1. ** Knowledge and Skill Target ** - In nursery classes, such as music activities, the goal was to develop children's interest in music activities, so that children would like music and be willing to do some simple movements with the teacher. Through the introductory part of the interaction exercises, such as clapping hands, patting shoulders, and other rhythmic greetings, as well as playing games such as "see who did it right," most children could understand and follow the rhythm to make corresponding movements, indicating that they had achieved their goals in this simple skill. - In language courses, the goal of story-telling was to let children understand the content and plot of the story and like to listen to the story. From the actual situation, the children showed a high level of attention when listening to the story, and they were able to say some key elements of the story under the guidance of the teacher, indicating that the children had a certain understanding of the story and had a good degree of achievement in this goal. 2. ** Emotions, attitudes, goals ** - In some story lessons with the theme of helping the mother do things, the children could experience the happy emotions of helping the mother do things in the story. In their daily interactions, they could also observe that the children began to imitate the behavior of caring for others in the story, which reflected that the children's emotions and attitudes were developing in the direction of the goal. ###(2) Course content and teaching methods 1. ** Course content ** - The content of the course covered music, language, life skills, and many other aspects. The music content was simple and cheerful, suitable for the age characteristics of the children. The language course was mainly based on stories. The content of the stories mostly revolved around the life scenes or characters that the children were familiar with, such as family life, small animals, etc., which were easy for the children to understand. The life skills course included self-care training, such as dressing and washing hands. 2. ** Teaching Method ** - In terms of teaching methods, they mostly used games and intuitive teaching methods. For example, in music activities, movements were combined with music, and children could feel the beat of music through playing games. In language teaching, vivid narration and simple interaction were used, such as asking questions and guiding children to imitate the dialogue in the story. Life skills teaching used a combination of demonstration and individual guidance. For example, the teacher first demonstrated the steps of dressing, then let the children try it on their own, and gave individual guidance to the children who had difficulties. ###(3) Children's participation 1. In music activities, the participation of children was higher. For example, most of the children could actively participate in the music and movements. They clapped their hands and nodded their heads along with the music and the teacher. They also showed great interest, laughter, and interaction. 2. Children could also participate in language story activities. They would focus on listening to the story. When the teacher asked questions, some children could actively answer the questions. Although the answers might be simple, they showed a willingness to participate. 3. In life skills training, children's participation varied according to the difficulty of the skill. The children actively participated in the relatively simple hand-washing session. As for the slightly more complicated skills such as dressing, some children might rely on the teacher's help, but overall, they still had an active attitude. ##2. Reflection on the Course ###(I) Deficiency 1. ** Teaching content ** - In some knowledge courses, the existing knowledge and experience of the children might not be taken into account. For example, in riddle-guessing activities, due to the limited knowledge of young children, it was difficult for them to understand the riddles, resulting in low participation. - The depth and breadth of the course content were sometimes not accurate enough. For example, in music activities, the training of the sense of rhythm could be further layered to meet the development needs of different children. 2. ** Teaching methods ** - In group teaching, there was sometimes insufficient attention to individual children. For example, in life skills teaching, some children with slower movements or weaker comprehension might not receive enough guidance time. - The interaction methods could be more diverse. In language teaching, in addition to the way the teacher asked the children to answer, they could also increase the interaction between the children, such as letting the children tell each other the plot of the story. 3. ** Course Organization ** - Sometimes, the schedule of classes was not reasonable enough. For example, in a combination course with multiple activities, one activity might be extended due to the high interest of the child, causing the time of the later activities to be compressed, affecting the overall rhythm of the course. ###(2) Enhancement measures 1. ** Teaching content adjustment ** - When designing the teaching content, it was necessary to have a deeper understanding of the knowledge and experience of the children in the nursery class. For difficult content such as guessing riddles, you can choose simpler riddles that the child is more familiar with, or start with simple descriptions to guide the child. - According to the actual situation of the children, the depth and breadth of the curriculum content should be further optimized. In music activities, rhythm training content of different difficulty levels could be designed, from simple single-beat training to more complicated beat combination training. 2. ** Teaching method improvement ** - In group teaching, more attention should be paid to the needs of individual children. They could arrange for an assistant teacher to assist them, or the teacher could consciously pay more attention to the children who needed more help during the tour. - Rich interaction methods. In the language teaching, add group interaction between the children, such as sharing the story feelings within the group, or performing the plot of the story with each other. 3. ** Course organization optimization ** - When designing the curriculum, he planned the time of each activity more precisely and set flexible time. If the child is interested in a certain activity, it can be extended within a certain range, but it must also be ensured that there is enough time for other activities. At the same time, the pace of the course should be flexibly adjusted according to the actual reaction of the children in the classroom. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

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2026-07-15 14:38

Small class simple children's song score teaching plan and reflection summary

The following is a lesson plan and a summary of teaching reflection on the simple children's song "Small Hands Clapping": ##1. Teaching plan for Little Hands Clapping 1. ** Activity Target ** - Learn the song "Small Hands Clapping" to cultivate the child's sense of rhythm and develop the child's expressiveness. - Perceiving the dynamic of the multi-media screen and experiencing the joy of the activity. - He tried to imitate the lyrics of the song. 2. ** Event preparation ** - The furs of the various organs on his face. - It was the background music for the song "Clapping Hands." 3. ** Event process ** - ** Familiar with music and lyrics ** - Listen to the music and clap your hands (2/4 beats). Let the child feel the rhythm of the song while listening to the music. - Familiarize the lyrics with the movements. For example, the teacher could guide the child to say the lyrics while doing the movements. - ** Learn songs ** - Watch the song VCD and ask the children what they sang on the TV to guide the children to pay attention to the lyrics of the song. - Show the teaching aid (facial organs paste) and sing while sticking. According to the facial organs mentioned by the child, the teacher showed them one by one. Finally, the teacher pointed at the child to sing while doing the actions. - Follow the VCD to learn how to sing, so that the child can gradually master the singing style of the song. - ** Expansion and Creation ** - Guide the child to touch what else is on his body (such as shoulders, feet, etc.), and ask the child to put these parts into the lyrics and sing. ##2. Reflection on Teaching 1. ** Success ** - Use teaching methods suitable for small classes, such as letting children learn songs through games. Children in small classes were not easy to concentrate, so they were guided to participate in activities in the form of movements. For example, after children were familiar with children's songs and rhythms, they were asked to sing. The teacher would sing once to ask if the children liked it, then the whole class of children would stand up and surround the teacher. The teacher would sing in the middle, and the children would learn to sing while clapping their hands to form the rhythm. This kind of interaction could increase the participation of children. Children showed happy emotions in the activities, indicating that children were more interested in this teaching method. - After the children were familiar with the song, they could expand the creation process and guide the children to put other parts of their bodies into the lyrics to sing. This would help develop the children's creativity and language skills. 2. ** Inadequacies and improvement measures ** - When guiding children to learn songs, the effect would be better if the speed could be slowed down slightly and the voice could be softer. In future teaching, more attention should be paid to the grasp of the teaching rhythm, adjust the teaching speed according to the acceptance of the children, and interact with the children with a gentler and more intimate voice to enhance the teaching effect. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

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2026-09-16 07:22

Reflection, summary and improvement measures of physics teaching in daily life

Reflection on the teaching of physics in life: In the teaching of physics in life, there are some places that are done well, but there are also many problems. In terms of teaching content, although it was combined with life examples, some examples were not novel enough to fully stimulate the students 'interest. In terms of teaching methods, explanations were sometimes too traditional and lacked interaction, resulting in low student participation. In terms of the use of teaching resources, the integration of some modern scientific and technological resources was not sufficient. " Modification measures: update the teaching content and find more novel and interesting physics examples that are close to life. The innovative teaching methods were mostly group discussions, experimental inquiry, and other highly interacting methods. Make full use of modern scientific and technological resources, such as the use of animation to demonstrate physical phenomena, etc., to improve the teaching effect. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

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2026-08-12 06:18

A simple summary of the novel

" Celebrating Years " was a novel created by Maoni. It told the story of the growth of a young Fan Xian with a mysterious background. Fan Xian discovered that he was the Emperor's illegitimate son and learned that the Emperor was the murderer of his mother. The story unfolded from Fan Xian's point of view, depicting the changes in Qing Kingdom over the past few decades. In the end, Fan Xian successfully assassinated the Qing Emperor and supported the Third Prince to ascend the throne. He chose to live in seclusion in Jiangnan and led a peaceful life with his wife and children.

1 answer
2024-12-17 20:00

A simple summary of the novel

" Celebrating Years " was a novel written by Maoni. It told the story of the growth of a young man with a mysterious background, Fan Xian. In the story, Fan Xian discovered that he was the Emperor's illegitimate son and learned that the Emperor was the murderer of his own mother. The story unfolded from Fan Xian's point of view, depicting the changes in Qing Kingdom over the past few decades. In the end, Fan Xian successfully assassinated the Qing Emperor and supported the Third Prince to ascend the throne. He chose to live in seclusion in Jiangnan and led a peaceful life with his wife and children.

1 answer
2024-12-22 12:07

A simple summary of the novel

" Joy of Life " was a novel written by Maoni. It told the story of the growth of a young man with a mysterious background, Fan Xian. The story unfolded from Fan Xian's point of view, depicting the changes in Qing Kingdom over the past few decades. Fan Xian discovered that he was the Emperor's illegitimate son and learned that the Emperor was the murderer of his mother. After experiencing the trials and tempering of his family, Jianghu, and the court, Fan Xian finally succeeded in assassinating the Qing Emperor and supported the Third Prince to ascend the throne. He chose to live in seclusion in Jiangnan and lived a peaceful life.

1 answer
2024-12-22 04:36

A simple summary of the novel

" Joy of Life " was a novel written by Maoni. It told the story of the growth of a young man with a mysterious background, Fan Xian. In the story, Fan Xian discovered that he was the Emperor's illegitimate son and learned that the Emperor was the murderer of his own mother. The story unfolded from Fan Xian's point of view, depicting the changes in Qing Kingdom over the past few decades. In the end, Fan Xian successfully assassinated the Qing Emperor and supported the Third Prince to ascend the throne. He chose to live in seclusion in Jiangnan and led a peaceful life with his wife and children.

1 answer
2024-12-20 14:28

A simple summary of the novel

" Celebrating Years " was a novel written by Maoni. It told the story of the growth of a young man with a mysterious background, Fan Xian. In the story, Fan Xian experienced the trials and tempering of his family, the martial world, and the court. In the end, he broke the balance of the Qing Kingdom's officialdom and discovered that he was the Emperor's illegitimate son. He also learned that the Emperor was the murderer of his own mother. The story unfolded from Fan Xian's point of view, depicting the rise and fall of three generations of influential figures in the course of decades. The two clues, Fan Xian's growth and Ye Qingmei's life, ran through the entire novel. One was bright and the other was dark, slowly presenting the picture scroll of decades.

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2024-10-22 23:30
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