Many science educators are concerned with students' ability to understand science as a process and with their conceptions of scientific knowledge. Preliminary work has shown that the use of a model organizer can result in student perceptions of improved understanding, but the reason for this effect is not known. This research was undertaken to…

It can be inferred from the corpus of misconception research that an assumption that students come into secondary and college classes with a relatively homogeneous view of the world has been made. This paper takes the position that this assumption keeps researchers from a more comprehensive understanding of the factors that lead to science…