The transformation of the first unit figure: draw an axisymmetric figure and rotate the simple figure by 90 degrees; Flexible use of translation, symmetry and rotation to design patterns on the grid.

The second unit factor and multiple: master the concepts of factor and multiple, prime number and composite number, odd number and even number, and master the characteristics of multiples of 2, 3 and 5.

Unit 3 Cuboid and Cube: Explore their characteristics and master their surface area and volume. Know the meaning and measurement of volume, and use the volume formula to find the volume of an object.

Unit 4 Meaning and Properties of Fractions: Understand the meaning and properties of fractions, compare the sizes of fractions, use fractions or integers to make false fractions, and exchange integers and decimals.

Unit 5 Fraction addition and subtraction: master the calculation method and solve the simple practical problems about fraction addition and subtraction.

Unit 6 Statistics: Understand the composite broken-line statistical chart, and choose the appropriate statistical chart to represent the data as needed. You'll find a pattern of numbers.

Unit 7: Understand the diversity of problem-solving strategies and the effectiveness of using optimized mathematical thinking methods from a broad perspective of mathematics, and feel the charm of mathematics.