Share Google Docs as "View Only"

Here's a good tip from Richard Byrne: Make Copies of Google Documents Shared With You As "View Only."  Screenshots and directions are provided.  By sharing "view only," the original documents or presentations will not be able to be altered.  This is really great for those sharing directions with students.  However, students will be able to make a copy and then alter it.  Consider creating a template for a book report or lab activity sheet, share 'view only'.  Students are able to copy the template, complete, and share back with you.