First, the analysis of academic status. After the first three years of study, the fourth-grade students have acquired the initial logical thinking ability and simple abstract generalization ability, developed some good study habits, mastered some scientific methods, learned to think independently, communicate, negotiate, cooperate and communicate with others, learned to explore problems, and were able to put forward reasonable problems according to specific situations and solve them correctly. The ability to understand and analyze and solve problems has been improved. Specific to our class, most children have a solid foundation, a correct learning attitude and a solid grasp of basic knowledge. However, a small number of students have poor learning attitude and weak learning foundation, and the knowledge heard in class will not be used after class, so the correct rate of homework is low. In particular, two students are not only mentally retarded, but also have poor study habits. They refuse to finish their homework on time and like to procrastinate and not do their homework. Therefore, in this semester's math class, we should focus on cultivating students' interest in learning math, so that students are good at thinking, willing to think, not afraid of making mistakes and having a sense of problems. It is also necessary to cultivate students' mentality of learning mathematics happily and develop good study habits. I believe that children will finish their math study happily and go to a higher level in all aspects. Second, teaching material analysis's textbook includes the following contents: understanding of large numbers, multiplying three digits by two digits, dividing by two digits, measuring hectares and square kilometers, understanding of parallelograms and trapeziums, bar graphs, wide-angle mathematics, solving problems with mathematics, and integrating and practicing theme activities. Among them, "hectares and square kilometers" has been moved from Unit 6 "Area" in Book 2 of the third grade experimental textbook to this book, which is arranged after the understanding unit of large numbers, so that students can fully perceive and experience these two large-area units in combination with the understanding of large numbers. "Bar chart" was originally scattered in different grades in the first phase of the experimental textbook, but now it has been moved to the second phase of this book, reorganizing the contents of the original single bar chart and integrating it into a unit for teaching. Understanding large numbers, multiplying three digits by two digits, dividing divisor by two digits, measuring angles, and understanding parallelogram and trapezoid are the key teaching contents of this textbook. The teaching goal of this textbook is to enable students to: 65,438+0. Know the counting units of "one hundred thousand", "one million", "one billion", "one billion" and "one hundred billion", know natural numbers, master the decimal counting method, read and write numbers within 100 million and above 100 million according to several levels, and use the method of "five people in four hospitals" as required. Experience and feel the application of large numbers in daily life, and further develop the sense of numbers. 2. I can calculate the multiplication and division of three digits and two digits in writing, and I can estimate and check the multiplication and division accordingly. I can divide an integer by an integer, and divide an integer by hundreds of dozens. 4, know the area unit hectares and square kilometers. Knowing the propulsion rate between hectares and square kilometers, simple unit conversion is carried out. 5. Know straight lines, rays and line segments, and know their differences; Know several common angles, compare the angles, measure the degrees of the angles with a protractor, and draw the angles according to the prescribed degrees. 6. Know vertical lines and parallel lines, and draw vertical lines and parallel lines with straightedge and triangle; Master the characteristics of parallelogram and trapezoid. 7. Know bar charts (1 generation or above), be able to describe data with bar charts, answer and ask simple questions according to bar charts, and conduct simple data analysis. 8. Experience the process of finding, asking and solving problems from real life, understand the role of mathematics in daily life, form the consciousness of finding mathematical problems from life, and initially form the ability of observation, analysis and reasoning. 9. Experience the fun of learning mathematics, improve the interest in learning mathematics, and build confidence in learning mathematics well. 10. Develop a good habit of doing your homework carefully and writing neatly. Third, teaching measures 1, the understanding of large numbers should highlight the concept teaching of numbers and attach importance to the cultivation of number sense. Specifically, we should pay attention to the following points: (1) Enrich students' feelings about large numbers in various ways. (2) Strengthen the teaching of the concept of number and highlight the counting method in China. (3) Introduce the background knowledge of mathematics according to the learning content. 2. Appropriately improve the arrangement of computing teaching content and pay attention to cultivating students' flexible computing ability. Mainly reflected in the following three aspects: (1) Strengthening the teaching of written arithmetic. (2) Combined with the teaching of written calculation, the calculation methods such as oral calculation, estimation and simple calculation are infiltrated. (3) Strengthen the summary and refinement of calculation rules. 3, graphics and geometry teaching, pay attention to the understanding of concepts and the essential characteristics of graphics. Mainly highlight the following points: (1) Help students understand what they have learned on the basis of existing knowledge and experience. (2) Let students understand the essential characteristics of concepts and graphics by appropriate methods. (3) Design some interesting and active exercises, so that students can further feel the characteristics of graphics. 4. Strengthen the teaching of statistical knowledge and cultivate students' concept of data analysis. (1) Use students' existing knowledge and experience to learn new statistical knowledge. (2) Cultivate students' concept of data analysis. (3) Design learning activities close to students' real life, so that students can feel the practical significance of statistics. 5. Infiltrate mathematical thinking methods to let students feel and experience the role of mathematical thinking methods in solving problems.