I use this particular prompt in teaching slant in source based writing, something of which my students are guilty. Four out of the six sources have a bias. I have students break-down the directions, then identity the bias in each of the articles (individually or in groups). Next, I have the students read the last two sources and use them to refute the other six OR vice versa. This is an arduous task for most students because most of the research shows how detrimental energy drinks are. So, t