1. Strengthen the generalization and systematic arrangement of integers appropriately, and lay a good foundation for further learning decimals and fractions.

2. Increase the review of quantity measurement and systematic arrangement, so as to prepare for later learning to rewrite singular or composite numbers into odd numbers expressed in decimals and other related knowledge.

3. Strengthen the connection between decimals and integers and fractions, so that students can easily understand the concept of decimals and master the four operations of decimals.

4. Improve the arrangement of application problems and strengthen the connection between multiplication and division application problems and three-step application problems and two-step application problems.

5. The preliminary infiltration of statistical thought makes students understand the preliminary knowledge and statistical methods of statistics.

6. In the teaching of plane graphics, strengthen calculation and drawing, and cultivate students' spatial concept.

7. Cultivate students' thinking ability by teaching related mathematical knowledge.