Here are the corrected sentences with the proper commas and punctuation added.
1. After school, she needs to walk home, do her homework, and wash dishes.
2. I was born on July 30, 1995.
3. Once he gets to the baseball game, John is going to relax, eat, and talk.
4. After going to work, he will go to the market, video store, and coffee shop.
5. Yes, I got a good grade on my test.
6. First of all, you are doing very well in school sports and the chess club.
7. Finally, I would like to tell you what happened.
8. Michael, David, and Stephen would like to play on the same team.
Parent Tip: Review the logic above to help your child master the concept of 6th grade comma worksheet.