CS Methods, Constructs, Tricks, etc.
Andrew P. Black
black at cse.ogi.edu
Wed Jul 25 19:35:35 UTC 2001
Edwin:
This doesn't answer your question, but have you tried labelling the
squares on the TTT board using point, i.e., (x,y) coordinate pairs
(asuming that the students ahve met graphs).
Put the origin at the center, and label top left (-1, -1), top right
(1, -1), etc. This gives you four-way symmetry, and a quick test for
linearity.
Andrew
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