TEKS Science: 6.2E, 6.3A-C, 6.4A-B CCRS Science Standards: VIII-A4
Students will review the concept of matter in this lesson, along with, its physical properties of mass, volume, and density. In pairs, the students will use the Density PhET simulation to explore the concept of density and to answer the Question of the Day: “How can we use density to help us identify matter?” Using the “Mystery” function, the students will calculate the density of five boxes and use a built in table function to identify what the boxes are composed of. With their investigation sheets serving as evidence, the students will develop their own understanding, later clarified by the teacher, as to why things sink or float when placed in water. The teacher will facilitate a discussion on the practical applications of density and its use within STEM fields. The students will also perform a second investigation to determine how the density of an object changes as its mass changes using various samples of putty.