Variable Representation Assessment (VRA)

The Variable Representation Application or VRA, not only asks students questions about chemistry content, it allows them to switch among several possible representations of the molecules that are provided as possible answers (in a multiple choice question sense). The system has been implemented for questions related to general chemistry and organic chemistry thus far. By tracking not only whether or not students answer questions correctly, but also what representations they use to do so, we can gain additional knowledge about how students think about molecules and the models we use to visualize them.

Interested in trying the VRA with your students?

Are you interested in trying a version of the VRA with your students? If yes, please use the following email address to communicate the developer to setup a time that works best for you: polifka@iastate.edu

Versions of the VRA