I used the following seemingly flat 2D image from Allan Carrington as a trigger to a screencast that I created for my students in Explain Everything. Students used the APP LAYAR to scan the 2d image and a 3D website button popped up taking them to a screencast of Mrs. Pepe in Vimeo. This screencast gave them directions about how I wanted them to synthesize information regarding what type of documents a forensic scientist might use handwriting analysis with.