For students in the lower grades of primary school, the following methods can be used to help them get rid of their carelessness:

1. Establish a good reward mechanism to encourage students to be serious.

2. Guide students to observe and think carefully, and help students cultivate careful habits.

3. Cultivate students' attention and carefulness through games and other entertainment methods.

4. Teachers should put forward clear requirements for students and give timely guidance and correction.

Teachers should be role models for students and show a serious and rigorous attitude in the teaching process.

6. Pay attention to the characteristics of students and provide them with appropriate help.

7. Let students form the habit of finishing their homework carefully and give timely feedback.