Hey, how do I download it?
This is a warmer, and there is nothing to download. It's just an idea for your lesson, not a worksheet.
It is an activity that can be used at several levels, because all kinds of vocabulary can be used. The larger the room, the better the activity, as the word passes through several students before reaching the first, which will tell everyone what someone "wrote" on his/her back.
Put the students in line. Show the last one a word. The last student has to “write” the word using the tip of his/her fingers on the back of the student in front of him. And so it goes until the first student receives the word on his/her back and tells everybody what he/she thinks someone wrote on his/her back.