The document outlines a science lesson plan on density. It defines density as the amount of matter in a certain volume of a substance. The formula for density (D) is given as D = mass/volume. Examples are provided to calculate the density of Coke and Diet Coke to illustrate the concept. Practice problems are assigned for students to find the density of a rock and Fantastik spray and determine if the Fantastik will float or sink based on its density.