A comic strip about a plane mirror was used in a high school optics test, and it was perceived that
a large portion of the students believed that the mirror should be larger than the object so the
virtual image could be entirely visible. Inspired on the comic strip, an experimental demonstration
with flat mirrors was developed, in order to readdress this topic learning. Students were encouraged
to create their own investigation of the phenomenon with a simple instrumental apparatus and also
suggest different experimental approaches.