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8 th Grade Forensic Science T. Trimpe 2006

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1 8 th Grade Forensic Science T. Trimpe 2006 http://sciencespot.net/

2 Eyewitness accounts can be a useful tool in helping investigators with analyzing a crime scene, but are not viewed to be highly reliable. People are likely to view the same scene in different ways depending on their positions, line of sight, familiarity with the area, and other factors that can interfere with a person’s ability to remember details. Let’s test your “eyewitness” abilities! You will have 30 seconds to view the next screen. Try to memorize all 20 items you see! Eyewitness Accounts Pros & Cons

3 Neuroscience for Kids - http://faculty.washington.edu/chudler/puzmatch1.html Items to remember...

4 What do you remember? You have two minutes to list as many of the items as you can! How did you do? 20 -      15-19 -     10-14 -    5-9 -   4 or less – Wake up!

5 Now You See It, Now You Don’t Now that your eyes and brain are warmed up, let’s test your observations skills in the classroom. You will have one minute to take a look around. Try to pay attention to details! After the time is up, you will go to the hallway to take a quiz. No peeking allowed! Questions?

6 How did you do? 1.Red, yellow 2.Butterflies 3.Illinois College 4.14 5.5 (1 front, 4 side) 6.Butterflies 7.Has element symbols on it 8.2 (or 3 with laptop) 9.2 10.3 11.11 butterflies 12. 6 feet, 10 inches 13.Blue or navy 14.10 feet 15.Gray or light brown 16.By the door 17.6 (5 Birds, 1 butterfly) 18.South

7 Facial Composites Investigators work with sketch artists and eyewitnesses to create facial composites, or sketches of a person’s face. Today many police departments are using facial reconstruction software to help them with this task. The composite may be used internally to assist officers in identifying the suspect or used externally through local media (radio, TV, and newspaper) to solicit leads from citizens. FACES Software – Offers many options to help you recreate a person’s facial features.

8 Facial Composites The shape of the face The shape of the jaw The shape of the eyes The shape of the nose The width of the neck The shape & protrusion of the ears The presence of facial piercing The presence of facial hair, its color, & location The presence of facial markings, such as scars or tattoos Forehead or other facial lines The presence of eyeglasses or sunglasses The length, color, & texture of the person’s hair You will have a chance to try to create a facial composite. You will need to pay close attention to the following features:


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