Each community, each discourse tradition, has its own canons of intertextuality, its own principles and customs regarding which texts are most releva… - Jay Lemke

Our visual discrimination is far better than our linguistic system at dealing with complex ratios and continuous variations in space, line, shape, and color.

Many people have been taught a social habit, a discourse, for speaking about meaning, which considers only the role of the individual organism, or the individual mind, in the process of making meanings... Mentalistic discourses, by creating a separate realm and locating meanings there, are not useful for understanding the material and social aspects of meaning-making. Mentalistic discourses depend on a common sense view of the separation of mind from body, and individual from society, which has ideological functions in our society. Particular aspects of these discourses deflect attention away from the social, cultural, historical and political dimensions of the meanings we make.

Science teachers have a special responsibility to study the nature of science as a discipline, how it works, how it is described by sociologists, historians, and philosophers from different points of view…. Science education cannot just be about learning science: Its foundation must be learning about the nature of science as a human activity.