Density is a concept that all science classes typically reference, even in biology. In biology, the focus is on the algebra and the idea that solid water is less dense than its liquid. This lab activity engages students in gathering evidence and explaining the phenomena of water density.This lab is a quick one to set-up with minimal safety concerns. If you have plastic lab equipment, this is a perfect time to use this with younger or less experienced students. As a fun bonus, you can choose 3