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DO NOW Update your Exit Ticket Tracker How and when are friction ridges formed?

DO NOW Update your Exit Ticket Tracker How and when are friction ridges formed? What is the Bertillonage system? Describe a loop, a whorl, and an arch. Objectives: Students will be able to describe, compare, and identify the different types of fingerprints. Exit Ticket.

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DO NOW Update your Exit Ticket Tracker How and when are friction ridges formed?

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  1. DO NOW Update your Exit Ticket Tracker How and when are friction ridges formed? What is the Bertillonage system? Describe a loop, a whorl, and an arch. Objectives: Students will be able to describe, compare, and identify the different types of fingerprints.

  2. Exit Ticket • Raised portions on your hands that allow for gripping: • Fingerprint b. Whorls c. Friction Ridges • Define basal layer. 3. If 65% of fingerprints have loops, how are fingerprints considered individual evidence?

  3. Announcements • Exit Ticket trackers- absent • Extra Credit • Quiz 4 make ups • Notebook Checks today • Quiz on Tuesday • Gloves on Friday and Monday

  4. Review • Fingerprint • Bertillonage System • Basal Layer • Loop • Whorl • Arch

  5. Galton System • Turn/ Talk: why would the Bertillonagesytem fail • Showed how to classify fingerprints using loops, whorls, and arches Fingerprints stay the same from birth to death No two fingerprints are identical Prints cannot be altered Possible to classify

  6. Ten card system Rules: Partners Light Pressure Nail edge to nail edge Mine Classmates

  7. CFU…. T/F: your left index and right index fingerprints are the same

  8. Ridge classification (yesterdays activity) • Minutiae- description of fingerprints • Core • Short Ridge • Ending ridge • Delta • Hook • Crossover • Bridge • Bifurcation • Island (dot) • Enclosure • Eye

  9. CFU…. • Minutia is the word used to describe what?

  10. 12 Point Match • Criminal Courts will generally accept 8-12 point match

  11. 12 point system • Your finger prints • Some one else finger prints

  12. Exit Ticket • Criminal court will accept a _____ point match for fingerprint a. 1 b. 12 c. zero, no two fingerprint matches are the same. 2. To individualize fingerprints, you must use the structure of ridges called _______ 3. What is the difference between fingerprint patterns and ridge characteristics?

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