Have students compare their flags to see if any two flags are exactly alike. Show them a picture of the real Olympic flag. Repeat after me. Each student designs her or his own flag with five rings placed anywhere on the paper. Have the students carefully describe their flags so that their partner can draw it without looking at their picture.
Students then compare pictures.
Have them explain why the clues worked or didn't work. Have students consider the problem of drawing the Olympic flag from memory for an upcoming report when they know the five colors but have forgotten the order of the colors. Have students test their analysis by actually performing a class experiment. It may surprise students that there is a greater than 50 percent chance of a repeat with as few as fourteen drawings.