Making Sense of Density

Is teaching the concept of density to your students a struggle? Check out how Mr. Treadgold's 7th grade class uses a hands-on project to learn the abstract concept of density. They measure the mass and volume of different cylinders, create their own computerized spreadsheets in Excel for data and enter the formula to calculate density. By the end of the experiment, they're able to conclude on their own that density will not change as the shape and size of an object change, as long as the material it's made of stays the same.