Specifically targets all the mistakes students make when they cite text from the internet.
Do this progression with your students before they start including MLA in text citations in their essay.
They will still make the mistakes, but rather than explain the same instructions a thousand times, you simply refer them back to this progression.
I love targeted systematic training. Rather than limit the teacher, it frees him or her up. The goal of this type of progression is to make learning and teaching more efficient.