“…In order to understand prototyping at a deeper level and highlight the gaps in the prototyping literature, 46 papers were critically reviewed. We build upon Christie, et al 37 and Camburn, et al's work 14 by adding literature from engineering education 2,5,6,22,[38][39][40] , human computer interaction 9,27,34,41 , industrial design [44][45][46][47][48][49] , and design thinking studies 7,[50][51][52][53] . In the following section we use this literature to derive definitions for each of our prototyping lenses.…”