Here they have them all separated, with the work by Roy Lichtenstein on one table, and the work by Andy Warhol on another.
They decided that the work of Lichtenstein used mostly primary colors and very crisp clean straight black lines. Warhol had more varieties of color and a more subdued pallette. He also used photography printmaking and sometimes expressive, painterly effects. Of course, they put this in their own words by saying things like "Roy is more cartoony and Andy is more serious."
What do the two artists have in common? They were both artists who worked in the Pop Art style in the sixties and after. They both used imagery from popular culture in fine art settings.
Students summarized what they learned from this activity in writing. I told them they could organize their thoughts any way they liked. Below are a couple of the really good ones.