Norman Shapiro has asked that teachers and students
analyze their geometric drawings for uniqueness, the
underlying algorithm, terminology, and the logic of
the construction. This analysis leads to generalizations,
part/whole relationships, and more formal math work.
There are so many questions that could be asked, and
avenues of exploration, that these drawings could be
used for many worthwhile days of student activities.
credit: Norman Shapiro
http://mathforum.org/sarah/shapiro/shapiro.sequence.html