This is a two-part charrette. There are three books by Tufte:
 

Tufte, E. (1983). Visual Display of Quantitative Information.Cheshire, Conn.: Graphics Press.

Tufte, E. (1990). Envisioning information. Cheshire, Conn.: Graphics Press.

Tufte, E. (1997). Visual Explanations. Cheshire, Conn.: Graphics Press.

Tufte refers to these as being about pictures of numbers, pictures of nouns and pictures of verbs, respectively.

First, the conceptual part: You should choose one of these to read as a group. A presentation to the class about the books should include a synthesis of the principles implicitly or explicitly set forth in each.  Your presentations should embody and illustrate appropriate principles. (Including Tufte's suggestions on making presentations.)

The second part of the charrette is to represent a set of numbers, nouns or verbs in a graphical manner that illustrates the appropriate principles. Here are some suggestions that you should try to represent. (With appropriate rationale, substitutes are acceptable.)

Numbers: Number of hours spent doing LDT tasks  (or one of your own choosing)

Nouns: Courses in plans of study  (or one of your own choosing)

Verbs: How to design a presentation  (or one of your own choosing)