Introduction The so-called teaching reflection refers to teachers' re-understanding and rethinking of education and teaching practice, so as to sum up experiences and lessons and further improve the level of education and teaching. Teaching reflection has always been an effective means for teachers to improve their personal professional level, and everyone who has made achievements in education has always attached great importance to it. The following is a collection of related materials on the teaching reflection of "Classification and Arrangement" in the first grade mathematics, hoping to help you.

Reflections on the teaching of mathematics classification and arrangement in the first grade of primary school

"Classification and Arrangement" is the content of the third unit in the second volume of the first grade of People's Education Press. Through the activities in this class, students can compare, classify and arrange objects according to different standards or choose a certain standard (such as quantity, shape and color). In the activities of comparison, classification and arrangement, experience the consistency of activity results under the same standard and the diversity under different standards. After a simple data sorting process, students can present the classification results in their own way (words, icons and tables), simply analyze the data and ask simple questions according to the data. "Classification" is a practical activity of students. Through this activity, students can experience the significance and methods of classification. However, traditional teaching is a purely receptive learning method, which requires students to listen, listen and imitate too much. It can not only promote the development of students, but also become a resistance to their development. Looking back on the whole class, I think the advantage of this class is to cut into mathematics from life and stimulate the desire to learn. Psychological research shows that the closer the learning content is to the students' life background, the higher the students' conscious acceptance of knowledge. It is easy for students to feel that mathematics is around them by importing from their familiar life background. So in this class, I don't teach "classification" as a knowledge point, nor let students memorize the meaning of classification mechanically, but combine the foods that students are familiar with, such as classifying balloons. However, there are not enough teaching AIDS in this class, so students can't really experience the classification process. They can only rely on courseware to play, and students can observe and answer their own classification ideas or methods. In order to make students understand why they should be classified, I give an example of a supermarket according to the students' cognitive structure and real life: If the supermarket leaves things lying around, can you find the goods you want to buy quickly? Students think and answer. Then ask if you can buy fruit in the clothing section if you want to buy fruit. Why? Let the students understand why they should be classified. How to find what you want quickly after classification and experience the convenience brought by classification?

In the teaching process, in order to make up for the lack of teaching AIDS, I still use local materials and let students classify them with sticks and different graphics. Through group cooperation, students can feel, discover and communicate independently, and cultivate the sense of exploration and cooperation.

Reflections on the teaching of mathematics classification and arrangement in the second grade and the first grade of primary school

This lesson is the content of the first lesson of Unit 3 in the second volume of the first-year compulsory education textbook published by People's Education Press. In the old textbooks, in the preview class of the first volume of grade one, classification was put out as a knowledge point alone. After the revision of the new textbook, it was adjusted to the second volume of Grade One, and the classification and arrangement were put together, emphasizing the collection, arrangement and presentation of classification results on the basis of classification, highlighting that classification is the basis for collecting, arranging and describing data, which is closely related to statistics, paving the way for learning relevant knowledge of statistics in the future. At the beginning of the class, children visit the elderly on the Double Ninth Festival, which not only leads to the content of this class, but also permeates moral education. Then in the process of classifying balloons, I didn't frame the child's mind. Some children are divided by color, and some by shape, which develops with children's personality. Children classify balloons in groups and express the classification results in their favorite way, which exercises their hands-on ability and highlights the students' dominant position. In the process of sorting out the data, some children show it in the form of graphics, and some children show it in the form of similar tables. Both have their own advantages. The former is intuitive and vivid, while the latter is concise and clear. In the process of comparing which shape has more balloons and which shape has fewer balloons, a very important idea in mathematics-one-to-one correspondence is infiltrated. In this process, I also combined some personality characteristics of first-grade children and joined a small game.

Considering that children in Grade One are more active and have poor concentration, adding games in the middle can make children relax properly and concentrate more on their later studies. At the same time, the first-grade children are still curious and playful. In the process, join a small game to enliven the classroom atmosphere and mobilize the enthusiasm of children. Before the competition started, I invited a child on purpose, so that the only son below could not find a partner. In this way, let children realize that this game is played by two people, that is, one corresponds to one, which is permeated with a one-to-one relationship. Finally, the lyrics are rewritten as "one-to-one correspondence with good friends", so that students know that there is such a one-to-one correspondence in their hearts, paving the way for later study. Next, how to arrange balloons in the classroom, you can see which ones are more and which ones are less at a glance. With the foundation of the last game, in this link, some children with strong learning ability may be able to think of putting them one by one. Of course, some children will never think of it. Finally, cover the balloons with paper and empty the first and second balloons of each shape in turn ... Let the students feel the one-to-one relationship by saying "Duoduomei". With the preparation of this link, children will soon think of one-to-one arrangement in the process of color arrangement, which will look more beautiful and convenient for comparison, and at the same time, combined with the statistical chart behind.

Reflections on the teaching of mathematics classification and arrangement in the third grade and the first grade of primary school

"Classification and Arrangement" is the content of the third unit in the second volume of the first grade of People's Education Press. Through the activities in this class, students can compare, classify and arrange objects according to different standards or choose a certain standard (such as quantity, shape and color). In the activities of comparison, classification and arrangement, experience the consistency of activity results under the same standard and the diversity under different standards. After a simple data sorting process, students can present the classification results in their own way (words, icons and tables), simply analyze the data and ask simple questions according to the data. At the beginning of the class, start with a topic that students are familiar with-going to the supermarket to make students feel the importance of classification in their lives, and then go to the amusement park. What is the most in the amusement park? Introduce the theme map of this lesson-balloon map, and ask: can you clearly express the results of classification and counting in your favorite way? (Hint: You can draw, write and pose. Then, students think independently, and then discuss the classification method in groups.

The situation of example 1 starts with solving practical problems and closely combines the teaching of classification with counting (statistics), which embodies the learning purpose of classification. 1 and genie's words reveal the significance of classification, and at the same time give the classification standard (different shapes). The most important thing is to reveal the purpose count of classification at the same time, indicating that classification is the basis of collecting, sorting and describing data. Presenting these contents on slides is more helpful to help students determine the direction of group discussion. Finally, combined with the results of multimedia report discussion, three classification counting methods are given.

The last link is transferred to children's real life, such as fruits, vegetables, crops and furniture. Are divided by the game. Take the students in our class as an example and think about how you can classify your group members. This problem stems from children's life, and children are very enthusiastic about solving this problem. Everyone began to speak enthusiastically and said a lot of classification methods that they thought of. At the same time, give children a space to explore independently and do statistics in their own way. After the students finished the statistical chart, I asked them, "What is the classification standard of statistical chart?" Students deeply understand the diversity of statistical results under different standards. In this exercise, students collect, sort out and analyze data from real life, and their knowledge is applied and their ability is exercised, thus realizing the wide application of classification and sorting in daily life. Feel that mathematics is around, and feel the fun of mathematics.