Design a symbol that “universally” relays the essence of your topic. Think smiley face... peace sign... etc. only it’s a reflection of your thesis statement.
Students generated lists, sketched, observed, deconstructed, and juxtaposed the core visual symbols relating to their topics. They then set about rendering their findings, all the while considering such things as black / white balance, light wells, clarity of image at different scales, etc. From many options, one direction was chosen and evolved to finish.