An analogy-based exhibit is an analogical representation of a consensual (scientifically accepted) model of a phenomenon (Stocklmayer & Gilbert, 2002a). In an analogical representation, the two domains (source and target) may share different kind(s) of similarity(ies)—superficial and/or structural (Gentner, 1989). Superficial similarity exists when the two domains share a resemblance between the entities of which they are composed or the properties of those entities (Kokinov & French, 2003). Structural similarity exists when the two domains share a system of relational commonalities independently of any similarity between the entities of which they are composed (Dunbar, 2001). Therefore, two domains may be alike in respect …show more content…
“Milk is like water” because the properties of milk and its behavior are similar to water’s (Gentner,
1989).
Since distinguishing the kind(s) of similarity(ies) between two domains is fundamental to understand learning by analogy (Gentner, 1989), Stocklmayer and Gilbert (2002a) used this concept as a criterion to divide analogy-based exhibits into “exhibits only showing similarities between entities,” “exhibits showing similarities between both entities and relationships,” and “exhibits only showing similarities between relationships.” Examples of each type of exhibits are, respectively, “Bat,” “Back hole,” and “Visible effects of the invisible.” The exhibit “Bat” is a model for representing a bat’s ability to locate sounds. In the exhibit, there is a chair on the back of which is a three-dimensional representation of a bat’s head. A visitor can sit on the chair with her/his head inside the representation. By pressing a button, sound is emitted and visitors can hear clicks with different periodicity.
The emitted sound is the entity for the sound emitted by a bat, and the clicks are the entities for the echoes received by it. However, a relational structure is not shared between the