this neat lesson plan from the Museum of Science and Industry, Chicago.
Analyze Candy Using Chromatography is an activity in which you set up a "candy crime scene" for your students. In the activity you smudge the coating of a candy onto a small pieces of paper. Students have to determine which kind of candy was smudged. The students try to make their determinations based on comparisons with other candy smudges.
Applications for Education
Analyze Candy Using Chromatography is a fairly basic activity, but elementary school and middle school students will probably enjoy it. The activity could be a fun way for students to practice their reasoning skills.