**I've now made this product FREE because I'm not able to update one of the QR codes that was having trouble. This set of 10 riddles is a great way to help introduce QR codes while students have fun! Your purchase will also include a set of heading signs so you can just print and post for an instant interactive bulletin board or hallway display! Be sure to click on the preview to check it out! You only need to print the white posters with the riddle question which saves ink and paper! Students