This activity is not just great for back-to-school, but no matter what subject you teach, you can incorporate this activity to add some movement into your classes.
 
Included are the intructions to display for students and two rounds of 10 questions each, in addition to a series of blank, editable slides where you can add your own questions for this activity or another later in the year.
 
I also added some links to YouTube videos for visual examples of this activity being done live with students, both standing and with chairs.