"Kids sometimes have a hard time understanding the concept of positive and negative," Dorothy Eckmann, the institute's educational director, said of the printmaking process.
Printmaking was one of several hands-on children's activities at the Artists' Market and Festival at the institute. Volunteer Roseanne Stutts demonstrated the technique before brothers Cameron and Caleb Miller tried it.
"What's your favorite color?" she asked 8-year-old Caleb.
"Green," he said.
Only the three primary colors of red, blue and yellow were available.
Ms. Stutts placed yellow and blue onto a piece of glass and took a roller to spread the paint onto the surface.
"This is a rainbow roll," she said. "In the middle, it will start mixing itself and turn into the green."
After the paint began to mix, she instructed him to move the roller to the gelatin mold. After the mold was covered, Caleb selected a leaf and placed it in the paint. He covered the paint and leaf with a piece of paper and pressed down.
He then took the paint-laden leaf and pressed it onto the piece of paper.
In addition to prints, children made tie-dye T-shirts and other items.
The other portion of the event was the Artists' Market.
The works of about 30 area artists were displayed for sale Friday and Saturday with an artists' reception on Friday night.
"This is a great way for people to not only see the works of these talented artists but to meet those artists as well," said Kim Overstreet, the institute's director.
This was the second year for the combined festival and market. In previous years, an artists' market was held around the Christmas holidays.
Reach Charmain Brackett at firstname.lastname@example.org.