This document discusses the use of visual aids and displays in education. It addresses whether non-projected visuals like bulletin boards make students uninterested or pessimistic. It also discusses the purposes of bulletin boards and tips for making them effective. The document considers whether using visual aids is a waste of time and money. It then discusses using real objects, models, and dioramas in lessons as well as the advantages and disadvantages of various display formats. Finally, it asks how future teachers can utilize visuals to create an optimistic atmosphere for students.