In response to the letter from Theresa Tipton on drawing on student's work.
First of all never say never, but there are ways theat are more acceptable
than others. Of course it depends on the age of the kid. I find that on
paintings, plain old blackboard chalk works great to show where something
is off or a shape is needed. On drawings, I use tracing paper over the
student's work and show them various options. I also suggest that they try
out ideas on scrap paper or tracing paper and overlay the alternate idea to
see if it works. I encourage the students to have scrap paper near by to
try out ideas, colors, etc. Changing one's mind is always the artist's
perogative. Zerox copies of preliminary drawings also help.