This computer-based simulation allows students to quickly explore and develop understanding of the relationship between the floating and sinking behavior of an object, the density of the object, and the density of the medium. This simulation from ExploreLearning.com maximizes the opportunity for exploration and minimizes cleanup time and consumable materials cost. 

Although hands-on manipulation is important for any exploration of density, this simulation makes an effective reinforcement or extension. Its most useful feature is the ability to change quickly the density of the liquid, something not easily accomplished in the science lab.