This is a proofreading marks powerpoint. It goes through 10 proofreading marks but it is fully editable for you to add more to it. Each slide has the symbol, what it means, and an example on how to use it. There is a guided notes page available as well with the answer sheet included. Look at my store for the notes page.
Note: The note page can also be used as a worksheet, or even a matching activity. (with more work)