If everyone is sleepy, you can sleep. Those students who are talking should keep their voices down so as not to wake the sleeping students.

Very good/great

4. Please "study hard"

1, you are really like a little scientist, with so many important discoveries!

2. Great discovery, and then introduce it to everyone in a wonderful way, and everyone will admire you even more!

You have done a good job. It would be better if you could help your deskmate!

4. You are an excellent recorder. You not only recorded all the observations in detail, but also wrote them correctly and clearly!

5. It's really good, your work is really excellent!

6. Wow, your work is great!

7. You are great!

8. Applause for our success!

9. You see, through hard work, you have succeeded. Congratulations!

10. Participation is the beginning of success, and the result is not the most important!

1 1. Your research topic is very valuable, please continue your research!

12. This is the fruit of your successful cooperation, and the teacher is happy with this achievement! Come on for your active participation!

When students encounter difficulties or want to retreat:

1. Actions are better than actions. Let's study it!

You are so persistent that you can keep studying for so long!

Don't flinch when you encounter difficulties in your research. Believe in yourself, you can do it!

4. Let's Qi Xin join hands to cheer in Qixin, and the victory will definitely belong to you!

5. Persistence is victory!

6. A man is not afraid of any great difficulties!

7. Don't be discouraged! Opportunity is waiting for you!

8. You dare to challenge difficulties, and I want to learn from you!

9. You have worked hard, don't worry, be confident!

10. Nothing can beat you as long as you are careful!

1 1. Your question stumped the teacher. I hope everyone can help the teacher, check the information and solve this problem together, ok?

12. Confidence is the beginning of success!

13. Research is the wrong process of trying again!

14. Small doubts and small progress, big doubts and big progress!

15. Don't give up! Stick to it, and you will certainly do it!

16. Believe in yourself and you will do better!

17. The teacher appreciates your training!

18. You are very creative, and you are getting closer and closer to science.

19. The teacher believes that you are the best!

20. Give it a try. The teacher knows you can do it!

2 1. You have made a new discovery. I'm so happy for you!

22. You are a brave person who dares to try. Great!

23. Sunshine always comes after a storm. How can we see the rainbow of success without experiencing setbacks?