of scienti?c inquiry that forms the basis for the development of an assessment program consists of a two-part analytical frame: the de?nition of knowledge types relevant to scienti?c inquiry and the de?nition of an organi- tional frame for these knowledge types. Four types of knowledge are signi?cant for the de?nition of a speci?c s- enti?c inquiry program: cognitive knowledge, physical knowledge, represen- tional knowledge, and presentational knowledge. All four of these knowledge types are considered signi?cant. These four types of knowledge are organized in a framework that consists of two intersecting axes: the axis of knowledge types and the axis of stages of a s- ci?c scienti?c inquiry. This framework describes scienti?c inquiry as multi-stage process that involves the development of a series of in-lab outcomes (represen- tions) over an extended period of time.