If the grade is a 20 or less it is because the slideshow was not shared with me and I was not able to grade the work. Students need to look over the rubric carefully before turning in the work as this will be their only grade.
If the work was graded students need to revise their slideshow and then make a list of the slides they changed and how. They will turn in this list with their graded rubric so that I can revised the grade. Both the rubric and the note of revisions needs to be turned in to have the project grade changed.