This lab is fantastic for connecting density-in-theory to real life! This winner is great for general science, layers of the earth, oceanography, marine biology, or chemistry. My students are always so proud of themselves for figuring it out! The student sheet includes a section on evaluating the model (vital to the Next Gen. Science Standards!) Fits very well in a science journal/interactive students notebook (ISN). The teacher instructions gives detailed material list, instruction, and hints for success. Goes great with Density Lab 2.