Here’s a new, reaaaaaally useful PPT inspired by Linda Li’s “Like/Dislike” activity I saw back at iFLT last summer. The concept is simple—slides have two images you can use to ask an “either/or” question. That’s it, no words, so you can say anything you like. Oh, and click the question mark in the corner to jump to a random slide (after prompted to “Enable Content” for Macros upon opening the file).