I am having a terrible time trying to explain value to my 8th graders.
Last semester they understand value as seventh graders. But this year it is
like everything fell out of their head. We have done exercises on shading
techniques and currently are working on self-portraits. On the
self-portraits, I had the students add highlights and shadows, but they
don't understand. I explained highlights as where the light is reflects off
the object; the shadows are where the light cannot reach the object. (In so
many words) I have even had the students point out the areas on specific
objects, but the students can't take that information and relate it to their
work. Are there any ways in helping my students understand value (in terms
of highlights and shadows)?