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Do Now: 1. What is forensic science? When/where is forensic science used? 2. Looking at this picture, what evidence could be collected and used to solve a case 3. If you could have added any item to your container last class, what would it have been? (ex. More tape) STAND YOUR NAME TENTS UP. Continue on the paper from last class or get out a blank sheet of paper. COMPLETE SENTENCES
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1.Have your Notebooks by Thursday 2. Have your gloves by Monday
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Sheet of paper
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On the pink sheet in front of you, come up with your definition of forensic science.
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“Forensic science is the application of science to those criminal and civil laws that are enforced by police agencies in a criminal justice system” WHAT DOES THIS MEAN? 5
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“Forensic science is the application of science to those criminal and civil laws that are enforced by police agencies in a criminal justice system” Forensic science is the application of science to law 6
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How do we know that this person did this crime? What links a person to a piece of evidence? What makes evidence evidence ? Pink sheet
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Why are unsolved crimes unsolved?
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“Wherever he steps, whatever he touches, whatever he leaves, even unconsciously, will serve as a 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 mark he leaves, the paint he scratches, the blood or semen he deposits or collects. All of these and more, bear mute witness against him. This is evidence that does not forget. It is not confused by the excitement of the moment. It is not absent because human witnesses are. It is factual evidence. Physical evidence cannot be wrong, it cannot perjure itself, it cannot be wholly absent. Only human failure to find it, study and understand it, can diminish its value.“ - Professor Edmond Locard
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“Wherever he steps, whatever he touches, whatever he leaves, even unconsciously, will serve as a 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 mark he leaves, the paint he scratches, the blood or semen he deposits or collects. All of these and more, bear mute witness against him. This is evidence that does not forget. It is not confused by the excitement of the moment. It is not absent because human witnesses are. It is factual evidence. Physical evidence cannot be wrong, it cannot perjure itself, it cannot be wholly absent. Only human failure to find it, study and understand it, can diminish its value.“ - Professor Edmond Locard
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“Wherever he steps, whatever he touches, whatever he leaves, even unconsciously, will serve as a 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 mark he leaves, the paint he scratches, the blood or semen he deposits or collects. All of these and more, bear mute witness against him. This is evidence that does not forget. It is not confused by the excitement of the moment. It is not absent because human witnesses are. It is factual evidence. Physical evidence cannot be wrong, it cannot perjure itself, it cannot be wholly absent. Only human failure to find it, study and understand it, can diminish its value.“ - Professor Edmond Locard
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When two things come in contact, they will exchange material
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Examples…. When two things come in contact, they will exchange material
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When two items come in contact, they exchange material If an item come in contact with a (the word), _______ could be transferred. FOOTBALL
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The carpet
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A computer Keyboard
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A person
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A Cat
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1. window - charles 2. brush - jamil 3. mud - ahiren 4. shirt - sofia 5. wall - darion 6. fingernails - ronnie 7. water bottle - rashon 8. apple – pranay 9. wooden floor - briana 10. cup - john 11. scissors – tavon 12. gun - chavis 13. teeth – de’asia 14. the mouse to a computer - eduardo 15.gloves - terriq 16.duck tape - taaliyah 17. the criminal - naquan
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1. window - legerald 2. brush - eric 3. mud - melaysia 4. shirt - tajah 5. wall - gonzalo 6. fingernails - jenna 7. water bottle - asia 8. apple - kiara 9. wooden floor - sharief 10. cup - monteyona 11. scissors – de’ja 12. gun - william 13. teeth – sydney 14. the mouse to a computer - brandon 15.gloves – raequan 16.duck tape - jessica 17. the criminal - hunter
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http://www.smithso nianchannel.com/sc /web/series/100312 2/catching- killers/3375550/trac e-evidence#the- original-sherlock- holmes http://www.smithso nianchannel.com/sc /web/series/100312 2/catching- killers/3375550/trac e-evidence#the- original-sherlock- holmes
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Materials: 1 note card 2 pieces of tape Pen or pencil Name: Case Number: 1 st Lift 2 nd Lift
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1. Take a “tape lift” from the shoulder of your shirt. A tape lift involves placing a length of tape on the shoulder of the shirt and lifting the tape to remove any trace evidence. 2.Place that tape lift on your note card under the “1st lift” column. 3. Take a piece of tissue and rub it across your shoulder three times. 4. Next, rub shoulders with another student. 5. Repeat this shoulder rub until you have rubbed shoulders with a total of 3 people. 6. Take another tape lift on the exact same spot. Place this tape lift in the “2nd lift” contact column on the index card. 7. Compare the types of trace evidence found in the initial and after columns of the table.
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1. Describe the evidence that was found in the initial tape lift 2. What kind of evidence were found in the 2nd contact tape lift? 3. Can the type of shirt that you have on (cotton, silk etc.) have affected the exchange of evidence? Why/why not? 4. How does this activity illustrate Locard’s Exchange Principle? 5. Tracy, a student in the classroom has cat hair on her shirt. She states that she does not own a cat and neither do any of her friends. List 2 different ways that she could have gotten this hair on her shirt?
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Procedures Do Now Notebooks Forensic Science definition Locard Exchange Principle QUESTIONS????
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1. I am in contact with (name two things). I am transferring _____ to the ______. I am also transferring _____ to the _______. I could have prevented _______ from being transferred to the _______ by ___________. My ________ and _______can be transferred to me directly. 2. The evidence that can prove that I have been at POB today is…. (name 4 things) 3. It is/is not difficult to leave a trace because….. One example of how destroying might leave more that could identify you is when….. 4. Draw the table Heres an example of an answer Do not complete number 5
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1. The teacher of this class name is A. Ms.WilliamsC. Ms. Hinton B. Ms. HindellD. Ms. Hilliams 2. Define forensic science? 3. How is the locard exchange principle used to convict a criminal? Complete the following on the same sheet of paper with the Do-Nows. For the multiple choice, you may only write the letter. For #2 and #3, answer the questions in complete sentences. You DO NOT have to write the questions. Happy Friday… Turn up
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The Scene is simply defined as the actual site or location in which the incident took place.
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It is imperative that the first responding officer on the scene protect the individuals involved as a first priority. Protecting the evidence is the second task. The entire investigation could be dependent on this. Why is it important to secure the scene? Scene is secured by a restricting a perimeter, utilizing rope or tape. Entry of authorized personal is recorded. All unauthorized personal or removed to eliminate possibility of contamination or transfer of evidence (Locard)
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Witnesses must not be allowed to talk with each other. This is done so they do not compare stories and so that a new story is not created. (collusion)
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A forensic examiner needs to be able to scan the scene to determine if there is a primary crime scene or potentially a secondary crime scene. Primary scene- place the incident occurred Secondary scene- any other place connected to the incident Ex. This is done by the team leader who assumes control and assigns other duties such as who will be the : Photographer Log Recorder Sketch Artist Evidence Recorder and other personnel Specialist- entomologist, blood splatter, etc
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Done by the photographer A photograph is a two-dimensional reproduction of the crime scene. It serves as the permanent record of the crime scene. Everyone involved in the investigation will have an opportunity to look at theses photographs (the District Attorney, the defense counsel, homicide detectives, etc). They are also very important to you because the photographs will serve as “memory joggers” when you have to get up on the witness stand and testify. Good pictures are essential because most trials do not take place until a year or more has passed. Videos can also be taking at the crime
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This is done by the photographer Requirements of each photo: Photograph overall area from up close and medium range and far away prior to moving anything. Close up of each piece of evidence with evidence marker (including corpse) Include a point of reference to indicate size. ( a ruler, a pen, a car key)
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An accurate rough sketch drawn to scale noting position of evidence and body. All objects should be measured from 2 immovable landmarks Sketch should include Case #, date, time, locations, and assignments. Also included should be dimensions of room, furniture, doors, windows, distance of objects or bodies from entrances and exits Key Legend, should include direction and scale
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38 Date: August 14, 2001Criminalist: Ann Wilson Time: 11:35Location: 4358 Rockledge Dr St. Louis, Mo. A. Couch/sofa B. Female body C. Knife D. Over turned Lamp E. Chairs F. Table G. Fireplace c D E E E E E A G F
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Remember this is done individually and silently 2-3 complete sentences for each question Because you are writing in complete sentences you do not need to write the question 1.What could happen if the 7s was done out of order? 2.What may happen if the first officer on the scene forgot to secure the scene? 3.Why are photos and sketches an important part of crime scene?
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