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Do Now (silent and independent). Pick up a blue sheet from the front of the classroom _ _ _ _ _ _ _ Fold it hotdog style 3. Write you name on one side BIG AND BOLD Hinton X H I N T O N √

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Do now silent and independent
Do Now(silent and independent)

  • Pick up a blue sheet from the front of the classroom _ _ _ _ _ _ _

  • Fold it hotdog style

    3. Write you name on one side BIG AND BOLD

    Hinton XH I N T O N √

    4. On the back of that write your reason for taking this class (ex. “for the credit” “it relates to my career”) in a complete sentence.

    5. On the inside write an interesting fact about you (complete sentence).

    Once you finish pull out your composition notebook

Composition notebook setup
Composition Notebook Setup

  • IT HAS TO BE A COMPOSITION NOTEBOOK! (nothing else will be excepted)

  • If you wrote in your book already, IT IS OK

  • The first 3 blank pages of your book needs to be the table of contents

  • Table Of Contents

  • Page # Title Date

  • 1 Table of Contents

  • 4 Objectives

  • 8 Do Now

  • 22 Unit 1 8/28

  • 185 Exit Ticket

Do now silent and independent

Date each objective, do now, and exit ticket on the page that you are writing them on (not in the table of contents)

Number each page on the bottom outer corner


8/27 8/29

8/27 SWBAT explain 1+1 1. 1.

8/28 SWBAT ……. 2.




Pg.4 Pg.15

Fill up the page before you go to the next page

Types of evidence

Types of Evidence that you are writing them on (not in the table of contents)

“You can observe a lot by just watching.”

-Yogi Berra

Objectives: SWBAT -+


primary and secondary crime scene and evidence

SWBAT construct a diagram and reconstruct a crime scene

Do now silent and independent

  • What is evidence? that you are writing them on (not in the table of contents)

    • Something that tends to disprove or establish a fact.

    • Includes

      • Documents

      • Testimony

      • Objects

Http wilmothighschool com jochl files 2011 02 fsci ch 02 pdf

Two types of evidence
Two types of Evidence

  • Testimonial Evidence

    • Statement made under oath

    • What is said in court by a competent witness

    • Also called direct evidence

  • Physical Evidence

    • Tangible items that tend to prove some material fact

    • real evidence

Testimonial evidence
Testimonial evidence

  • Eye witness accounts provide important evidence

  • Eye witnesses Heavily influence juries

  • But are they accurate?

    • New information affects eye witness accounts

      • Mug shots

      • Leading/Suggestive questions

    • Memory errors

      • Time between the crime and questioning of witness can affect what they remember

    • Perception errors

      • Too dark

      • Encounter too brief

      • Presence of weapon diverted witnesses attention

The innocence project
The Innocence Project

  • National organization dedicated to exonerating wrongfully convicted people through DNA evidence

  • Eye witness misidentification is the number one cause of wrongfully convictions nationwide

  • As of 2008, the Innocence Project exonerated 212 wrongfully convicted poeple

Do now silent and independent

Physical Evidence

"Wherever he steps, whatever he touches, whatever he leaves even unconsciously, will serve as silent witness against him. Not only his fingerprints or his footprints, but his hair, the fibers from his clothes, the glass he breaks, the tool marks he leaves, the paint he scratches, the blood or semen he deposits or collects -- all of these and more bear mute witness against him."

—Dr. Edmond Locard

Physical evidence
Physical Evidence

  • Tangible items that tend to prove or disprove a fact

  • “Real Evidence”

  • 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.

  • Type of evidence forensic scientists are most interested in

  • Forensic scientists will…

    • Observe physical evidence

    • Determine identity

    • Determine origin

Physical evidence1
Physical evidence…

  • Can be any material or object

  • Take any form

    • Large as a building

    • Fleeting as an odor

    • Small as a hair

    • Microscopic as DNA

  • Much more reliable than testimonial evidence

Types of physical evidence
Types of Physical Evidence

  • Trace Evidence

  • Transient evidence

  • Conditional Evidence

  • Indirect Evidence

  • Circumstantial Evidence

  • Individual evidence

  • Class evidence

Trace evidence
Trace Evidence

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

Not all evidence is permanent
Not all evidence is permanent…

  • Transient evidence

    • Temporary evidence

    • Can be easily changed or lost

    • Usually observed by first officer on scene and must be recorded at that time

  • Examples?

    • Odors

      • Perfume, cigarette smoke, gas

    • Temperature

      • Coffee pot, car hood, water in bath tub, dead body

    • Imprints

      • Footprints in sand, fingerprints in dust, teeth marks in perishable food

Conditional evidence
Conditional Evidence

  • Produced by a specific action or event at the scene

  • Must be observed and recorded

  • Examples

    • Lights

    • Garage door

    • Doors

    • Windows

    • Position of body

    • Position of furniture

Indirect evidence
Indirect Evidence

  • Evidence that does not prove or disprove a fact in question

  • Evidence providing only a basis for inference about a disputed fact

  • May prove something like the possession of controlled substances or driving under the influence

Circumstantial evidence
Circumstantial Evidence

  • Evidence based on suggestion rather than personal knowledge

  • Implies a fact or event without actually proving it

  • The more circumstantial evidence there is, the greater it weighs

  • Probability and statistics important

  • Examples

    • Blonde hair found in hand of murder victim with black hair

    • Size 10 sneaker print near the body

Significance of physical evidence
Significance of Physical Evidence

Individual Evidence

Class Evidence

  • Material that can be related to a single source

  • Narrows an identity to a single person or thing

  • Examples

    • DNA

    • Fingerprints

    • Handwriting

    • Some physical evidence

      • Piece of glass that fits another piece like a jigsaw puzzle

  • Material that can be associated with a group of items that share properties or characteristics

  • Object is similar to group of similar objects but not one single object

  • Narrows an identity to group of persons or things

  • Examples

    • Blue jeans

      • We can use some individualization such as length, style, brand, shade, surface treatment but there are still thousands of jeans like that

Do now silent and independent

Value of physical evidence
Value of Physical Evidence

  • Can prove crime has been committed

    • Gasoline at a scene of a fire

  • Back up witness testimony or disprove it

    • Test blood stains of suspects

  • Link suspect with victim or crime scene

    • Broken glass of headlight in cuff of suspects pants at scene of hit and run

  • Determine identity of people associated with crime

    • Fingerprints, DNA

  • Allow investigators to reconstruct a crime

    • Blood spatter patterns

Do now silent and independent

Physical Evidence





Do now silent and independent

Sketching the

Do now silent and independent

Exit Ticket

For each picture, tell me if its a. circumstantial or direct evidence

b. Physical or biological evidence

c. Class or individual evidence