"Double Statistical Table" Lecture Notes

"Double Statistics Table" Lecture Model

The following is a model essay on the lecture of "Double Statistics". Welcome to read!

Let's talk about textbooks first:

1, teaching material analysis:

This unit is based on students' preliminary understanding of simple statistics and histograms, and further study of compound statistics and histograms. Compound statistical data is meaningful in teaching. Choose data reflecting China's economic construction, social progress and people's living standards, such as medals won by China sports delegation at the Olympic Games; In 2004, the number of fixed telephones and mobile phones in urban and rural areas increased, which was expressed in the form of statistical tables, educating and inspiring students while teaching statistical knowledge.

2. Teaching objectives:

Knowledge goal: to make students know the compound statistical table in specific statistical activities, fill in the statistical table according to the collected data, and make a simple analysis according to the data in the statistical table.

Ability goal: to enable students to further understand statistical methods and develop statistical concepts in the process of understanding, filling in and analyzing composite statistical tables.

Emotional goal: through learning, students can further understand the close relationship between statistics and real life, feel the fun of learning mathematics, and establish confidence in learning mathematics well.

3. Teaching emphases and difficulties:

Understand the structure of compound statistics, fill in compound statistics and make a simple analysis of compound statistics.

Second, teaching methods:

In this class, I use multimedia teaching, combined with examples in daily life, and use various teaching means and methods such as discussion, practical operation and group communication to add vividness and interest to teaching. In the process of learning, fully mobilize students' learning enthusiasm, actively organize all students to participate, take students as the main body, and combine the methods of explanation, demonstration and operation to let students use their brains, discuss with each other and find out ways to solve problems.

In the interpersonal relationship between teachers and students in the classroom, I create a harmonious and relaxed teaching environment, which makes students feel that teachers are their intimate friends, treat each other as equals, and be amiable (teachers don't pretend to be authoritative, but convey cordial, trusting and equal information to students through their own language, actions and emotions), thus stimulating students' thirst for knowledge, making them dare to speak and think, dare to express their true thoughts, and consciously and wholeheartedly devote themselves to learning activities to feel learning.

In the whole teaching process, I pay attention to the cultivation of students' mathematics learning habits, including the habit of speaking (arousing their desire to express, speaking accurately and completely), the habit of listening (listening to classmates' speeches and teachers' expressions) and the habit of thinking.

Third, talk about the teaching process:

According to the age characteristics of the fifth grade and the requirements of the new curriculum standard, I divide this lesson into five links:

First, start from life and introduce new knowledge.

The new curriculum standard of mathematics requires students' mathematics learning activities to be lively and active.

The process of personality. ? Life-oriented mathematics, so that students can learn realistic mathematics? It is one of the new curriculum ideas. Therefore, based on students' actual life and existing knowledge and experience, I created a link to investigate the number of students in our class who are willing to participate in four interest groups, so that students can complete four similar simple statistics according to the number of boys and girls in each interest group. This is to combine the content of teaching materials with the reality of life, so that students can bring mathematics into life and then return to mathematics from life to solve and analyze some mathematical problems in life, which not only improves students' interest in learning, but also cultivates their ability to collect and process information. The structure and filling method of single statistical table are also recalled, which provides material for compiling composite statistical table. Tradition Mathematics in books? For what? Middle school mathematics in life? Let the math class be full of life. Then I guide students to compare the similarities and differences of these four statistical tables. By comparing the similarities, we can clearly see that the structure of these simple statistical tables has two columns: gender and number of people; By comparing the differences, it is obvious that these statistics can only reflect the number of boys and girls in a certain interest group. On this basis, the following questions are put forward:

Can you tell at a glance whether there are more boys or girls participating in interest groups? (The students can't tell for sure. ).

So if you want to look at the statistics, is there any good way? Students will think of merging these four statistics into one. Therefore, I instruct students to explore how to combine four groups of figures in a statistical table.

Second, return to life and learn new knowledge.

Understanding the structure of compound statistics is a difficult point in teaching. Although students are not required to do composite statistics, I have made some changes in the presentation of composite statistics. Considering that the imparting of knowledge is not just giving, students should take the initiative to explore and discover, acquire new knowledge, and at the same time let them deeply feel the structure of composite statistics. It is not only a ready-made statistical table, but also leads students to experience the process of designing composite statistical tables to increase their perceptual knowledge.

1, design, understanding of compound statistics:

First, let the students discuss in groups how to design a composite statistical table. Students have the basis of simple statistical tables and can quickly think of some contents in the tables. But at this time, students' thinking is fragmented and one-sided. Therefore, we can use the resources generated in these classes to write on the blackboard and guide students to explore what information needs to be filled in. So as to constantly improve the table and reveal the meaning of the header and the names of all parts. (header, horizontal column, vertical column, data, title, date)? Discard: This is a complete composite statistical table.

2, fill in the double-entry statistics:

After the students fully understand the structure of the composite statistical table, I will let the students fill it out independently. Because there is a foundation in front, students can fill it out quickly. By filling in the data, students realize that the composite statistical table is the synthesis of previous single statistical tables of the same kind, and the number of boys and girls in four interest groups can be reflected in one composite statistical table at the same time. Then let the students report and say the meaning of each data, and further perceive the structure of this composite statistical table. Then I aim at the mistakes that are easy to appear in the process of filling in the form, and let the students exchange the methods of calculating the total number and the total count. It is recognized that the total number can be obtained by adding the total number of boys and girls in four groups or by the total number of people in each group. Further make students realize that using these two methods to calculate separately can play a test role.

3. Analysis of double-entry bookkeeping statistics:

After the students complete the design and fill in the composite statistical table, I will let the students analyze the statistical table. First of all, let students combine the previous teaching to solve the problem of more boys or more girls, so as to echo each other. Then ask the students to discuss what else they can learn from statistics, so as to understand the role of statistics.

4. Experience double statistics:

Finally, through comparative analysis, students can further understand the characteristics of composite statistical tables and their connections and differences with single statistical tables. In the process of filling in the form, students have experienced the structure and characteristics of the composite statistical table. By comparing with the previous four statistical tables, we can further feel that the composite statistical table not only reflects the number of people in each interest group, but also reflects the number of people in these groups as a whole, so it is easy to compare the number of men and women in the four groups.

In the teaching of the whole new curriculum, I let students understand the structure of compound statistics table with the help of single statistics table, and master the methods of filling and analyzing tables, which is helpful for students to experience the development process of knowledge and realize that describing data with compound statistics table is also the need to solve problems.

Third, serve life and consolidate new knowledge.

1, practice consolidation

? Practice? The number of medals in China Olympic Games is a topic. When I was teaching, I first introduced it through the 2008 Olympic Games to stimulate students' patriotic enthusiasm. Then take out the questions for the students to see, find out what data the questions provide, and then let the students try to design. Header? Understand the structure of this composite statistical table, and then let the students fill in the statistical table independently. Finally, let the students talk about what they have learned from the statistics, so as to cultivate their national pride.

2. Comprehensive application:

Exercise 12 questions 1 First, guide students to examine and understand the questions. Rural fixed telephone? Local fixed telephone? Cell phone? Different meanings of "and"? What's the new telephone service every month? The connotation of. Then let the students fill in the form independently and exchange feedback. It should be noted that when communicating questions, it should be clear that the data given in the questions are all new data this month. When comparing which month has the biggest increase, only look at the data itself, not the difference between months! On the basis of full understanding, students can also ask some different questions according to the information in the table, and discuss and answer them together.

According to different contents, the forms of statistical tables are also different. So I collected some different forms of statistical tables for students to see, so that students can understand that the setting of columns should conform to the actual situation, and the specific forms of statistical tables can be changed.

Fourth, summarize in class and review new knowledge.

According to the memory on the blackboard: What did we learn in this class? Do you know what are the characteristics of composite statistics? What have you gained from your study? Before answering this question, students are bound to recall and reflect on the most unforgettable learning activities in the class and sum up their new learning, so as to cultivate students' good habit of reflection.

Fifth, expand extracurricular activities and practice new knowledge

I design this link: let students investigate and count the things around them. I asked the students to grade their classroom performance, which was divided into three stars, two stars and one star, and then divided into four groups for investigation. Finally, fill it in a composite statistical table and let students analyze their classroom performance. Students can realize that statistics are around us, experience the close relationship between statistics and real life, feel the fun of learning mathematics, and further understand the role of statistics.

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