infinite numbers

"47" has many meanings: - It can represent the number twenty-eight, multiplied by four by seven, and can refer to twenty-eight years. - It could indicate that a person was twenty-eight years old. - It refers to the twenty-eight generals of Yuntai, the founding minister of the Eastern Han Dynasty. - It refers to the twenty-eight constellations. - In the old customs, every seven days after a person died was the anniversary of their death. A memorial ceremony was held once, and the fourth anniversary of their death was called " 4th and 7th." - Among the Hakka people,"47" was commonly known as "Sister Seven", and there was a custom of filial piety. - In the history of Korean philosophy, there was the "47 Debate", also known as the "47 Debate". It was a great debate that lasted for nearly a hundred years. "40 Sisters" is equally exciting. Everyone is welcome to click and read it!

The following is a lesson plan and reflection on the formation of numbers: ##1. Teaching plan: The formation of numbers (1 - 5 as an example) ###(1) Activity Target 1. Guide children to learn how to form numbers within 5. 2. Able to read the numbers 1, 2, 3, 4, 5. 3. Experience the life of mathematics and experience the fun of mathematics games. ###(2) Event preparation 1. Teachers and children each received a set of numbered cards ranging from 1 to 5 and five finger puppets. 2. Each person would get a set of dotted cards ranging from 1 to 5. ###(3) Activity process #### 1. Arouse interest and lead the topic Show the finger puppets to arouse the interest of the children, such as,"Children, today the teacher has brought a few cute finger puppet friends. Let's take a look." #### 2. From concrete image to abstract training - Let the child operate the puppet, review the formation of numbers within 5, and read the numbers correctly. - Ask the child to show a finger puppet and inspire the child to say that the number of finger puppets is represented by the number "1". The teacher shows the number "1" and guides the child to associate "what does 1 look like" and read it. For example, one could say,"1 is as thin and long as a stick." - Ask the child,"How does one become two?" Ask the child to verify and read the number 2. If the child takes out another finger puppet, it will become two finger puppets. At this time, the teacher will show the number 2 and guide the child to associate it with "2 is like a duckling swimming in the water". - Using the same method, review the formation of 3, 4, and 5. Read the numbers 3, 4, and 5. For example, 3 was like an ear listening to sounds, 4 was like a small flag floating in the wind, 5 was like a scale hook buying vegetables, and so on. #### 3. Semi-abstract to abstract thinking training Let the children operate the dots and number cards to further review the formation of numbers within 5. For example, he asked,"How many dots are there if one dot is added to two dots?" Let the child put a card with three dots on the table, and put the number "3" under the dot card. In this way, the children would understand that the formation of numbers was to increase a certain number on the basis of the previous number. #### 4. Game Consolidating - ** Listen to the sound and raise the number card **: When the teacher rings the bell for the corresponding number of times, the child will raise the corresponding number card. For example, after striking the small bell three times, the child raised the number card "3". - ** Number card to find friends **: Five children will come forward and each choose a number card. The teacher will say a number or show the corresponding number of items. The child holding the corresponding number card will say "I'm here" or make a special action. For example, if the teacher says "three apples", the child holding the number 3 card can jump and say "I am here". ###(4) Activity summary To summarize the performance of the children in the activities and encourage the children to look for the numbers 1 - 5 in their lives. ##2. Reflection 1. ** Success ** - Through the use of various teaching aids such as finger puppets, dot cards, and number cards, the abstract numbers became more intuitive, and the children better understood the concept of number formation during the operation process. For example, in the puppet pointing segment, children could actively participate in the operation and intuitively see how the number changed as the number of objects increased. - The setting of the game segment effectively increased the participation and enthusiasm of the children. For example, the games of listening to music, raising the number card, and finding friends with the number card allowed the children to review and consolidate the digital knowledge they had learned in a relaxed and happy atmosphere. At the same time, it also trained their reaction ability. 2. ** Inadequacies ** - When guiding children to associate numbers, some children's imaginations were not fully stimulated, perhaps because the guidance methods were not diverse enough. For example, for the number 4, some children could only say "like a small flag" provided by the teacher and did not have any more unique ideas. - In the process of the activity, some children were not familiar enough with the number recognition. It might be because the number of practice was not enough, or the way of recognition was relatively simple. 3. ** Modification measures ** - When guiding children to think about what the numbers look like, they can provide more hints or show some relevant pictures, objects, etc. to stimulate the child's imagination. For example, when guiding children to think of what the number 5 was like, they could show physical objects or pictures such as scale hooks and sickles to give children more reference. - Increase the number reading practice opportunities. You can set up a special number reading area in your daily life or regional activities so that children can practice reading at any time. At the same time, a variety of reading methods can be used, such as train reading, group competition reading, etc., to improve children's interest and proficiency in reading. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

According to the relevant information, there were many answers to guessing numbers, such as 101, 3, 8, etc. "The Crane Drinks the Spring Breeze" is equally exciting. Everyone is welcome to click and read it!

The following is a reflection on the teaching of the fourth-grade mathematics three-digit multiplying two-digit mental arithmetic: ** 1. Success ** 1. ** Students as the main body ** - This part of the content was based on the students 'existing knowledge of multiplication. Students were the main body of the teaching activities. Students were allowed to participate in the entire teaching process. According to the content of the picture, they would raise mathematical problems and then list the formulas. With the help of his existing experience in mental arithmetic, he directly reported the results, then thought independently and communicated with the class, thus concluding the method of mental arithmetic. This process allowed the students to experience the formation of computational methods, reflecting the concept of diverse algorithms and opening up the students 'thinking. 2. ** Arouse learning interest ** - In the teaching, the teaching materials were used to create familiar situations for students, and the calculation teaching was combined with solving practical problems in life. If mental arithmetic training emphasized skills and accuracy too much, it would easily make students feel bored. Familiar scenes could make students feel a sense of familiarity and interest in learning, recognize the connection between mathematics and real life, and feel the value of mathematics. 3. ** Laying the foundation for calculation ** - The learning method of transferring and analogy was used to let the students obtain a successful experience in a pleasant atmosphere. This method of learning laid a good foundation for the subsequent learning of written arithmetic in the teaching of three-digit multiplied two-digit oral arithmetic. ** 2. Inadequacies and Directions for Enhancement ** 1. ** Miscalculation of student's ability ** - There might be situations where the students 'mental arithmetic ability was overestimated. For example, some students might spend too much time or make mistakes on some basic mental arithmetic during the teaching process. In the future, he would need to increase the practice of listening to arithmetic before class, especially the practice of addition and substitution. 2. ** Lacking in learning habits ** - If they didn't pay attention to cultivating students 'learning habits, when they were asked to share their ideas and methods in class, students would not dare to say, be afraid of making mistakes, dare not ask questions, and answer incomplete questions, resulting in the classroom not achieving the expected effect. Therefore, students should be guided to communicate in small groups on the basis of independent thinking. Each student should be encouraged to express their opinions, listen to their peers 'solutions, and feel the variety and flexibility of their solution strategies. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

The two seven heads were combined with the five numbers, and the two seven added together was fourteen. Combined with the five numbers, from a numerical point of view, if it was a simple addition, it would be 14 + 5 = 19. However, from the numerical relationships reflected in other materials, such as the numerical combination logic in the relevant content of the river map, 27 corresponded to fire, and its number was seven. When combined with the number five, it could also be understood that seven plus five equals 12. Therefore, the correct number for "27 + 5" could be 19 or 12, depending on the logical relationship. "40 Sisters" is equally exciting. Everyone is welcome to click and read it!