First, take an old embarrassing photo of yourself and blow it up to be poster size using the free site http://www.blockposters.com. The more embarrassing the photo, the better! Then, cut the poster into 64 equal pieces (or however many you feel necessary) and attach questions to the back of each piece. You may consider using the Kuta Software site to make up questions (http://www.kutasoftware.com). There are a lot of free materials available and you can even sign up for a free trial version for access to even more materials.
Then, using notecards, bulletin board paper, a chalkboard, or white board, map out a grid on the wall or board for the picture puzzle pieces with the answers to the questions in the correct positions in order to produce the correct image upon completion. Coordinating this takes a bit of time, so plan ahead.
Next, make sure all students have a workspace handout to complete their calculations. The polynomial workspace handout is located on page two, but you may have to alter this depending on the content you use for this activity. Checking work is then very simple. If students do not see their answer on the grid, they made a mistake and must check their work. Likewise, if there appears to be a puzzle piece in a wrong position (i.e. does not make sense in terms of the picture), then students must re-think their solution. The workspace handout also makes it easy for the teacher to check student work.