Group class notes are important materials recorded by group members in group class learning. In order to ensure the accuracy and completeness of information, they will modify them. When there is an error or need to supplement the content, you can lightly cross out the wrong part of the original information with a pencil or write new content and opinions in the blank. It can ensure the accuracy of the notes and facilitate future viewing and archiving. Pay attention to keep the notes clean and readable when correcting them, so as not to cause unnecessary influence on other contents.