1, draw symmetrical figures with the knowledge of axial symmetry.

2. Distinguish between translation and rotation, and draw a simple figure with horizontal and vertical translation on the grid paper.

3. Understand the meaning of factors and multiples; The connection and difference between the concepts of factor and multiple; Correctly judge whether a common number is a prime number or a composite number.

4. Calculation method of cuboid surface area: Volume calculation of cuboid and cube.

5. Understand and summarize the relationship between fraction and division; Understand the meaning of fraction with the meaning of division.

6. Understand the meaning and characteristics of true points and false points.

7. Understand and master the method of decimal and decimal interchange.

Learning difficulties:

1, draw symmetrical figures with the knowledge of axial symmetry.

2. Distinguish between translation and rotation, and draw a simple figure with horizontal and vertical translation on the grid paper.

3. Understand the meaning of factors and multiples; The connection and difference between the concepts of factor and multiple; Correctly judge whether a common number is a prime number or a composite number.

4. Calculation method of cuboid surface area: Volume calculation of cuboid and cube.

5. Understand and summarize the relationship between fraction and division; Understand the meaning of fraction with the meaning of division.

6. Understand the meaning and characteristics of true points and false points.

7. Understand and master the method of decimal and decimal interchange.