In a matter of seconds you can create an exit slip for all of your classes to complete. Just click the "+" in the lower right corner and choose "Question". You can ask a multiple choice question or an open-ended question. Students will be able to see each other's responses, but not until they have answered. Also, you can choose whether you want students to be able to respond/reply to each other. This is a great opportunity to teach appropriate and respectful online behavior. Some amazing class discussions can occur using the Question feature!
If you have a pdf that you'd like to enlarge, you can do so right from within Adobe Reader. Here's how: Go to "Print", then choose "Poster": Next, set the scale to "200%" for 4 pages (experiment for larger) and I prefer no overlap, so set it to 0: PRINT!!