1. Unit 1: Intro to forensic science

2. Discuss with your neighbor
How do detectives use logic to help them narrow down to one suspect? (think about your Deadly picnic)

3. What are the rules of evidence?
Probative value: proves something related to the case
Most evidence collected at a scene has very little if any probative value
Example, in the case of a motor vehicle accident, a witness's testimony that she saw one automobile enter the intersection on a red light is a probative fact about whether the driver was at fault.
Material: evidence that addresses issue of crime

4. What makes up Physical Evidence?
Transient: temporary, easily changed or lost
Usually observed by the first officer on the scene
Ex: odor, temperature, imprints or indentations, markings

5. Types of Physical Evidence
Pattern or Transfer evidence- produced by direct contact between a person and an object or between two objects

6. Types of Physical Evidence
Conditional- produced by a specific event or action
Important in crime scene reconstruction
Ex: lighting, smoke, location (stains, victim, vehicle, etc.) vehicles, body position, scene (condition of furniture, doors/windows) signs of disturbance

7. What is the difference between Individual evidence and class evidence?
Object has characteristics common to a group of similar objects
Not to a single object
Individual evidence
Can be linked to a unique, single, specific source

8. Ticket out the Door
In your notebook, create a Venn diagram comparing individual and class evidence.
2 differences, at least 1 similarity