Students will formulate a hypothesis about the relationship (linear, direct, indirect, etc.) between the distance a drop of blood falls and the diameter of the splatter it makes. To test their hypothesis, the students will work collaboratively to make blood droplets, on paper, from different heights. After graphing droplet diameter and height using a spreadsheet program, individual students will evaluate their hypothesis. Students will use their graphed data to: 1) write an equation for the mathematical relationship of droplet diameter and height. 2) interpolate the height from which a blood droplet made by someone else was dropped. The students will compare data from different groups to determine possible sources for differences.