Bell Work: 11/21/14

1
Bell Work 11/21/14

• Need 2 Know
• Multiple Choice/4 Corners
• Constructed Response
• Science World magazine
• Marijuana Breaking Down the Buzz Pages 12-13

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EQ Objectives

• Objectives

• EQ

• TLW
• Identify different fingerprint classes.
• Identify the unique ridge patterns of a
  fingerprint.
• Develop latent prints from a crime scene and
  identify the fingerprint patterns.

• Can we research areas of health sciencesforensic
  science?

3
Avoid Partial Prints
GOOD PRINTGet as much of the top part of your
finger as possible!
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Directions
1st Roll the pad portion of your thumb over
the ink pad from the left side of your thumb to
the right. You do not have to push down really
hard!
2nd Roll the pad portion of your thumb from
the left side of your thumb to the right in the
correct box on your paper to make a thumbprint.
3rd Continue this process to make a fingerprint
of all ten fingers on the My Prints worksheet.
4th Use your notes and a magnifying lens to help
you figure out what type of pattern is found in
each of your fingerprints. Label each one with
the patterns name.
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Fingerprint Analysis

• How do our fingerprint patterns compare to the
  expected averages?

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Lets determine the rate of occurrence for our
fingerprint patterns ...
Pattern Total Prints
Arch
Loop
Whorl
How do our results compare to the averages? 60 -
Loops 35 - Whorls 5 - Arches __ -
Loops __ - Whorls __ - Arches Write a
paragraph on your worksheet that summarizes our
results.
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Lets determine the rate of occurrence to
compare males vs. females.
Pattern Male Female Total Prints
Arch
Loop
Whorl
Which pattern is most common pattern among the
males in this class? Which is most common pattern
among the females?
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Tweet a response

• Use a Post-It Note to tweet about the following
  question
• How do the averages of fingerprint patterns for
  each gender compare to the expected averages?

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Bell Work 11/24/14

• NO BELL WORK!!!
• Open up your notebook to your fingerprinting
  pages.

10
EQ Objectives

• Objectives

• EQ

• TLW
• Identify different fingerprint classes.
• Identify the unique ridge patterns of a
  fingerprint.
• Develop latent prints from a crime scene and
  identify the fingerprint patterns.

• Can we research areas of health sciencesforensic
  science?

11
Fingerprint Analysis

• How do our fingerprint patterns compare to the
  expected averages?

12
Lets determine the rate of occurrence for our
fingerprint patterns ...
Pattern Total Prints
Arch
Loop
Whorl
How do our results compare to the averages? 60 -
Loops 35 - Whorls 5 - Arches __ -
Loops __ - Whorls __ - Arches Write a
paragraph on your worksheet that summarizes our
results.
13
Lets determine the rate of occurrence to
compare males vs. females.
Pattern Male Female Total Prints
Arch
Loop
Whorl
Which pattern is most common pattern among the
males in this class? Which is most common pattern
among the females?
14
EQ Objectives

• Objectives

• EQ

• TLW
• Identify different fingerprint classes.
• Identify the unique ridge patterns of a
  fingerprint.
• Develop latent prints from a crime scene and
  identify the fingerprint patterns.

• Can we research areas of health sciencesforensic
  science?

15
Fingerprints Using ridge patterns/characteristics
(unique identifiers)
1Introduction to Basic Ridgeology by David
Ashbaugh, May 1999
Image from
http//www.cs.usyd.edu.au/irena/minutia.gif
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Ridge Characteristics
Use these characteristics as points of
identification when comparing fingerprint
samples. The more points you can find in common,
the better the match!
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Ridge Characteristics
EXAMPLE
http//cnx.org/content/m12574/latest/properties.jp
g
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How many ridge characteristics can you identify
in this fingerprint?
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Try It!
1 Blow up your balloon about halfway and twist
the end to keep the air from coming out. Do not
tie it off! 2 Use an ink pad to make a print
with one of your fingers and label with a
permanent marker. Write your name on the balloon
as well. 3 Blow up the balloon to full size
and tie the end. 4 Analyze the fingerprints to
find several ridge structures that we have
discussed. Use a colored Sharpie to mark these
structures on your balloon by circling .
Tweet Which ridge structures were most common
in your group? Were there any structures that
were not found in any of the fingerprints?
Balloon Fingerprint Activity http//www.msichicag
o.org/fileadmin/Education/learninglabs/lab_downloa
ds/fingerprint_analysis.pdf