For both the subunits, basic knowledge on biology, physics, chemistry and mathematics is required at the level the module is written for. The activities in this subunit 1 introduce students to the following concepts and ideas:
- Properties of fingerprints and the fact that fingerprints are unique
- Techniques to identify fingerprints
- Techniques to take fingerprints (both from a suspect and from a crime scene)
- Properties of the human body and ways to use this in identifying a criminal
- Relation between step distance and length of a person
- Basic rules about statistics