This textbook includes the following contents: observing objects (3), factors and multiples, cuboids and cubes, exploring graphs, the meaning and nature of fractions, graph movement (3), addition and subtraction of fractions, making phone calls, statistical graphs of broken lines, wide-angle mathematics and general review. Factors and multiples, cuboids and cubes, the meaning and nature of fractions, addition and subtraction and statistics of fractions are the key teaching contents of this textbook.

Second, the teaching objectives

1. Understand the meaning and basic properties of fractions, compare the sizes of fractions, turn fake fractions into fractions or integers, exchange fractions with decimals, and skillfully divide and divide.

2. Master the concepts of factors and multiples, prime numbers and composite numbers, odd numbers and even numbers, and the characteristics of multiples of 2, 3 and 5; Will find the greatest common factor and the least common multiple of two numbers in 100.

3. Understand the meaning of score addition and subtraction, master the calculation method of score addition and subtraction, and skillfully calculate simple score addition and subtraction, which will solve simple practical problems about score addition and subtraction.

4. Knowing the volume, the meaning of the volume and the unit of measurement, we will convert the units and feel the practical significance of the volume and unit of volume.

5. Explore and master the calculation methods of volume and surface area of cuboids and cubes, and explore some measurement methods of physical volume.

6. Be able to draw an axisymmetric figure on grid paper and rotate the simple figure by 90 degrees; Appreciate the patterns in life, and flexibly use translation, symmetry and rotation to design patterns on square paper.

7. Understand the meaning of mode through abundant examples, find the mode of a set of data, and explain the practical significance of the results; According to specific problems, appropriate statistics can be selected to represent different characteristics of data.

8. Understand the statistical chart of compound broken line, and choose the appropriate statistical chart to represent the data as needed.

9. Experience the process of finding, asking and solving problems in real life, understand the role of mathematics in daily life, and initially form the ability to solve problems by comprehensively applying mathematical knowledge.

10. Experience the diversity of problem-solving strategies and the effectiveness of using optimized mathematical thinking methods to solve problems, and feel the charm of mathematics. Form the consciousness of discovering mathematics in life, and initially form the ability of observation, analysis and reasoning.

1 1. Experience the interest in learning mathematics and build confidence in learning mathematics well.

12.SPAN & gt Develop the good habit of doing your homework carefully and writing neatly.

Third, teaching measures:

1, with curriculum reform as the center, classroom teaching reform as the breakthrough, and comprehensively improving the quality of education and teaching as the main line, actively carry out innovation in teaching and research, constantly enhance the vitality of work, let the classroom play the maximum benefit and let every student get the maximum development.

2, seriously study the spirit of the new curriculum reform, according to the requirements of the new curriculum reform, grasp the content of teaching materials, thoroughly understand the cohesion of teaching materials, carefully prepare lessons and attend lectures, carefully correct homework, find out the students' base, let good, medium and poor students know fairly well, better adjust measures to local conditions, teach students in accordance with their aptitude, and do a good job in the transformation of students with learning difficulties.

3. Keep learning business theory, improve their own quality, strengthen the combination of theory and practice, and strengthen intuitive teaching. Through teaching AIDS, wall charts, projectors and other teaching AIDS, students can understand and master mathematical concept knowledge from physical objects.

4. While strengthening basic teaching, we should continue to pay attention to the development of students' intelligence, cultivate students' interest in learning mathematics, give full play to their specialties and cultivate their mathematical ability.

5. Make necessary mathematics teaching AIDS to prepare for effective mathematics classroom teaching.