P.A.V. Digital Sort: 1. Google Slides drag and drop activity. Students sort formulas and words, categorizing whether they refer to perimeter, area, or volume. 2. Google Form. Same content as the drag and drop, just in a different format. I generally will use with after teaching each concept. We'll review each of them individually, then I'll give them time to try to sort through the drag and drop on their own or with a buddy. After that we'll check in, and once we've checked in and corrected, we'