Grayce P. Storey
I. Objective:
Students will be able to:
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1. Iist and discuss the three principles of fingerprinting as it relates to the court.
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2. Iist and discuss the three types of fingerprint patterns.
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3. List the three kinds of crime scene prints.
II. Vocabulary
1. fingerprint
2. crime scene
3. criminalist
4. epidermis
III. The Three Principles of Fingerprinting
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A. Fingerprints are an individual characteristic.
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B. Fingerprints will remain the same during an individual’s lifetime.
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C. Fingerprints can be systematically classified according to their general ridge pattern.
IV. Three Types of Fingerprint Patterns
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A. Loops
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B. Whorls
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1. Plain Whorls
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2. Central Pocket Loop
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3. Double Loop
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4. Accidental Whorl
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C. Arches
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1. Plain
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2. Tented
V. Three Kinds of Crime Scene Prints
A. Visible Prints
B. Plastic Prints
C. Invisible Prints
VI. Lab Activity (Taking Fingerprints from a Glass)
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A. Materials:
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1. Glass
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2. Feather
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3. Spoon
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4. Adhesive Tape
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5. Paper Towel
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6. Cornstarch
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7. Black Paper
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8. Notebook
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B. Procedures
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1. Use groups of 2 or 4
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2. Using a paper towel, wipe off the glass thoroughly and apply the print of a group member’s finger
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3. sprinkle cornstarch over the print
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4. Use a feather and slightly dust the powder residue
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5. Stick adhesive tape to the area and un-stick the adhesive tape
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6. Apply the adhesive tape onto the black paper
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7. Write up your observations to be shared in class
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C. Optional
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1. Scenario
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A student purchased a soda from the store on the way to school. He left the soda on his desk and went to the restroom. Upon returning, he discovered his soda had been half consumed. Let’s FIND OUT WHO DID IT BY USING THE PROCEDURE ABOVE . . . .
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2. Teacher: Choose one culprit, or the student may have drank it himself and forgot about it.
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3. Activity (Using LHS CHES)
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a. Solve the crime, page 23 Follow instructions given