DO NOW

Face your name tent towards the front of the room

Study the picture… • How many animals were here? What kind were they?• What were they doing?• Were they here at the same time?

On your note paper, use your best guess and write down what you think happened at this scene.

3 people will share.

How was that activity related to forensic science?

Name Seat Number

Behler, Shelby A. 1Benavides, Selena Yvette 2

Casillas, Esmeralda Guadalupe 3

Cervantez, Ashley N. 4Chamberlain, Danyel E. 5Deleon, Victor Manuel 6Escalera, Daisy Angely 7Escobar, Breanna D. 8Flores, Michael Jesse 9

Garza Martinez, Carlos Tomas 10

Gomez-Saravia, Marilin Alisia 11

Grant, Christopher M. 12Guzman, Ricky A. 13

Hernandez, Gabriela 14Hernandez, Johnny

Raymond 15

Holmes, Jordyn 16Juarez, Jeska Elizabeth 17

Lara-Ibarra, Cintya Maribel 18

Name Seat Number

Martinez, Maricela 19Martinez, Mirage Angel 20

Medina, Lisamarie 21Miranda, Brennan

Gabriel 22

Murray, Hannah Ruth 23Nelson, Justice Raymond 24

Phang, Odom K. 25Pineda, Deanna Rene 26Quintanilla, Sophia R. 27

Ramirez, Alejandro Valaguez 28

Reynolds, Dylan Joel 29Russell, Zachary T. 30

Salazar, Julian Alexander 31Samilpa, Jacob

Alexander 32

Sanchez, Luis G. 33Washington, Dexter

Jarrod 34

Williams, Jaquice T. 35Zapata, Nadja Riley 36

Welcome to 5th period forensic science!Pick up all materials from the “Do Now” boxes (in the cabinet)

Sit in your assigned seat:

signal

• After you hear the bell, you have 5 seconds to…… achieve silence… look me in the eyes… remain silent until I give instructions

REACT !!!!!

R.E.A.C.T.R espect everyoneE nter and exit appropriatelyA ccept responsibilityC ooperate with everyoneT ake action

Turn to your learning partner and give them a sincere

compliment.

FIND SOMEONE WHO

5 minYou can only sign a paper ONCE

Prize for the person who fills in all boxes first

LEARNING OBJECTIVE

Write your own example of

deductive reasoning

ONE EXAMPLE

https://www.youtube.com/watch?v=RrzBQskzDo8

What observations does Sherlock make?

What conclusions does he draw?

Deductive Reasoning

Making inferences or drawing conclusions based on available evidence

– Observe a situation– Organize it into parts– Evaluate the parts– Draw appropriate conclusions

ANOTHER EXAMPLE

https://www.youtube.com/watch?v=H9PY_3E3h2c

Identify example(s) of deductive reasoning.

How is this different?

Deductive reasoning

When you use deductive reasoning, you don’t always come to a true or correct conclusion.

Your observations and assumptions must be sound and reasonable for you to reach true and correct conclusions.

Deductive Reasoning Example

• All men are mortal. observation • Mr. Cater is a man. related observation• Therefore, Mr. Cater is mortal. conclusion / inference

With your learning partner, create your own deductive reasoning example. You have 5 minutes.

3 groups will be called on at random to share.

Paper work• I need your paperwork

CRITICAL ANALYSIS REMINDER• Critical Analysis 1

– For Analysis 1 you will be reading a Sherlock Holmes story and answering questions about how deductive reasoning was used

– Due Sept 12th – B

– Due Sept 11th – A

– There is an entire Sherlock Holmes PDF on our website www.tinyurl.com/crockettcater.

Deductive Reasoning Article

• Read the article. (10 minutes)• Each time you reach a sub-heading, write a note or two

back and forth with your learning partner about the section you just read.

• Mention your feelings towards the article.

2 groups will be called on at random to stand up and read their written

conversations to the class.

SWITCH SEATS / PARTNERS

• Find the person who has the same color popsicle stick as you do.

• You can choose your new seat – you must sit next to your new partner.

EVIDENCE

Locard’s Exchange Principle

• “When a person comes into contact with an object or another person, a cross-transfer of physical evidence can occur.”

• the intensity, duration and nature of the materials in contact determine the extent of the transfer.

Brainstorm on large paper

• Using a marker and large paper, write down as many pieces or types of evidence as you can during the next 5 minutes.

Pick up popsicle sticks, place in chem closet

Gallery walk

• Place paper on the wall.• Gallery walk – read all papers.• Sticky notes – Place comment

on at least 3 others’ papers.

5 min – then take paper back to your seat.

Evidence

Anything that tends to prove or disprove something.

LEARNING OBJECTIVE

Classify evidence into appropriate

categories

On your chart paper

Classify each type of evidence on your paper as we go through the next few slides.

Testimonial evidence includes oral or written statements given to police as well as court testimony by people who witnessed an event.

Physical evidence refers to any material items that would be present at the crime scene, on the victims, or found in a suspect’s possession.

Trace evidence refers to physical evidence that is found in small but measurable amounts, such as strands of hair, fibers, or skin cells.

Source: http://www3.sc.maricopa.edu/ajs/crime_scene_technician.htm

What will evidence collected at a scene do for the investigation?

• May prove that a crime has been committed• Establish key elements of a crime• Link a suspect with a crime scene or a victim• Establish the identity of a victim or suspect• Corroborate verbal witness testimony • Exonerate the innocent. • Give detectives leads to work with in the case

Types of Evidence

Types of Evidence

Direct: firsthand observations (eyewitness account, video camera, confessions)

Circumstantial: indirect evidence; implies a fact, but not directly prove it

Types of Evidence

• Physical: Impressions from fingerprints, footprints, shoe prints, tire impressions, tool marks, fibers, weapons, bullets, and shell casings

• Biological: body fluids, hair, plant parts and natural fibers

Types of EvidenceClass Evidence• Narrows identity to a group

of persons or things• Example: blood type

Individual Evidence• Narrows identity to a single

person or thing• Example: fingerprint, DNA

Crime Scene EvidenceCrime Scene Evidence

• Direct or circumstantial evidence?• Physical or biological evidence?• Class or individual evidence?

YOUR CHART PAPER

• Make sure your name / seat number and your partner’s name / seat number is on there.

• Fold them and drop them in to the box as you leave.

LATERAL THINKING

In the middle of the ocean is a yacht. Several corpses are floating in the water nearby.

LATERAL THINKING• Alternate Solution #1• A group of people were on an ocean voyage in a yacht.

One day, they decided to go swimming -- they put on their swimsuits and dove off the side. They discovered belatedly that they have forgotten to put a ladder down the side of the yacht and were unable to climb back in, so they drowned.

• Alternate Solution #2• The same situation, but they set out a ladder that was

just barely long enough. When they dove into the water, the boat, without their weight, rose slightly in the water, putting the ladder just out of reach.

LATERAL THINKING

A man is lying dead in a room. There is a large pile of gold and jewels on the floor, a chandelier attached to the ceiling, and a large open window.

LATERAL THINKING

Solution:The room is the ballroom of an ocean liner which sank some time ago. The man ran out of air while diving in the wreck.

LATERAL THINKING

A woman has incontrovertible proof in court that her husband was murdered by her sister. The judge declares, "This is the strangest case I've ever seen. Though it's a cut-and-dried case, this woman cannot be punished."

LATERAL THINKING

Solution:The sisters are Siamese twins.