If your students are all editing the same document and you wanted each student to get their own copy, then you will want to do the following:

1. Go to the Classwork tab in your Google Classroom

2. Create

3. Reuse Post

4. Select the assignment you want to reuse

*Be sure to leave the box checked that says, "Create new copies of all attachments"

5. REUSE (It's the blue button at the bottom right corner)

6. On the new assignment, be sure to use the pulldown arrow and select, "Make a copy for each student" next to each item you want students to have their own copy of.