This article provides an example of an innovative science activity applied in a science methods course for future elementary teachers at a small university in northeastern Turkey. The aim of the activity is to help prospective elementary teachers understand the density concept in a simple way and see an innovative teaching example. The instructor described the mechanisms underlined in density by arousing the curiosity of the students (by giving an attractive title), by sustaining their interest throughout the topic (by relating to real-life activity), and by using simple language (appropriate to their level of understanding). The way of explaining the density used in this article could also be used in science teacher education, high school science classes, and maybe even in junior high and elementary schools. Many science educators recommend connecting hard-to-understand science concepts to real-life experiences. And in this article the instructor tried to implement an innovative science lesson by connecting the density concept to real-life experiences (to acting in a play).