Discussed are three examples of computer graphics including biomorphs, Truchet tilings, and fractal popcorn. The graphics are shown and the basic algorithm using multiple iteration of a particular function or mathematical operation is described. An illustration of a snail shell created by computer graphics is presented. (YP)

Investigated the effect of the choice of a model's medium (algebraic expression or computer program) on the performance of students. Student programers did not transfer the qualities of a computer program approach to their algebraic models. Provides items for five tests. (YP)

Reports on a study designed to further investigate whether structured Logo learning experiences would have a positive influence on student understanding of selected basic geometry concepts. Results indicated more than just one year of Logo instruction would be needed to improve students understanding of simple angle and distance concepts. (TW)