Counterintuitive moments in the classroom challenge common sense and practice and can be used to help mathematics students appreciate the need to explore, reflect, and reason. Proposed are four examples involving geometry, systems of equations, and matrices as counterintuitive instances. (MDH)

Conceptual problems hinder the development of computer-assisted art instruction. Presented is a framework to guide the organization of instruction and to facilitate the selection of computer strategies appropriate to particular art learning situations. Various types of computer-assisted instruction are presented within a continuum of teaching…