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!
Did you know that there are great options to convert pdf files to Powerpoint? And, they don't just convert each page as an image but actually recreate file w/text boxes, etc. Not perfect, but very good. Click this Google Search link to locate options: http://bit.ly/35491xO (I've used both "Smallpdf" and "Ilovepdf" and had great results.) Once you have the Powerpoint, you can, then, easily, convert to Slides while uploading. (Just click the "cog" in the upper right corner of Drive, then "Settings" and make sure you have "Convert uploaded files to Google Docs editor format" checked as shown below.) If you're trying to create a presentation from a pdf, these tools are lifesavers!!