In this engaging episode of SciShow Kids, host Jessi and her robot friend Squeaks explore the fascinating science behind fingerprints. The video explains the biological basis of fingerprints—how the tiny ridges on our skin combined with natural sweat and oil allow us to leave marks on everything we touch. It emphasizes the concept of biological uniqueness, teaching students that no two people share the exact same fingerprint patterns. The video features a clear, step-by-step tutorial on a DIY science experiment that allows students to lift and view their own fingerprints using simple classroom supplies like a pencil, paper, and tape. It categorizes the three main fingerprint patterns (arch, loop, and whorl), introducing young learners to basic scientific classification and observation skills. Finally, the video connects these biological concepts to real-world applications, explaining how law enforcement uses fingerprints to solve crimes and how technology uses them for security. This resource is excellent for introducing forensic science, biology, and data collection in a fun, accessible way for elementary students.