This experiment focuses on fundamental concepts in kinematics and fluid dynamics. Students simulate passive drip stains using the forensic blood substitute in controlled conditions and analyze how they spread across a paper surface. Students will learn how dripping height, droplet volume (related to kinetic energy) and terminal velocity all affect the size and the shape of a bloodstain. They will then use this knowledge to comment on a photo from a 'cold case'. This is an engaging way to integrate a variety of STEM concepts into the classroom!