My Favorite kNOw is a great way to analyze student work and mistakes anonymously, without shame, and turn them into learning opportunities. To do the do the activity, present the slide to the entire class and then click the slide animation. At this time, a "ghost" student will begin solving the problem on the board. The "ghost" student's work will contain several correct and incorrect steps (most of which are common misconceptions) that the rest of the class must identify. Give the students a