ForensicScienceActivities

ForensicScienceActivities - ForensicScience Activities...

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Forensic Science   Activities Fingerprinting   | Shoe  Prints   | Lip Prints   | Handwriting  analysis | | Chromatography |   Fingerprinting Have  students  read  the  handout   Fingerprinting  Background  Information .  Divide  the  class  into groups  of 4-5 students.   Give  each  student  a sheet  where  they  can  record  their group's  fingerprints.   The  easiest  way  to   record  fingerprints  is to have  students   rub  an  area  on  a piece  of paper  with a pencil.   The  students  then  rub  their fingers  over  the  graphite  on  the  paper.   Next, apply  a   small  piece  of tape  to the  finger,  lift and  place  the  tape  on  the  sheet  of paper.   You  will then  have  a record  of each  student's   fingerprints.   You  may  also  place  the  tape  on  a sheet  of overhead  projector  film and  then  you  can  project  th   fingerprint for the  entire  class  to see.   Make  a copy  of the   fingerprinting  record  sheet  for each  group  so  that you  may  use  it in   this  activity and  future  crimes.   Choose  one  set  of fingerprints  to be  those  of the  culprit in each  case  the  students  so   fingerprints. The case: Yesterday,  some one  put salt in the  sugar  bowl on  the  teacher's  table  in the  lunchroom.   Later  in the  day   a large  jar containing  a   mysterious  white  substance  was  found  stashed  behind  the  curtain  on  the  stage.   The  substance  was  later  determined  to be  sa    Upon  investigation,  a set  of fingerprints  was  found  on  the  jar.   Your  job  is to examine  the  fingerprints  and  decide  if anyon   your  class  is the  culprit in this  crime..   Additional Fingerprinting Activities:
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Dusting for fingerprints:  Rub your finger across your nose or through your hair.  Make a fingerprint on a clean glass.  Sprinkle  cocoa powder over the glass and brush the powdered area with a fine paintbrush to remove the excess powder and expose the  print.  Place a piece of transparent tape over the print and lift the print from the glass.  If you use a dark glass or piece of  plastic, use talcum powder instead of cocoa to lift the print. Give each student a small piece of metal or plastic.  Have them rub their finger over their nose and make a fingerprint on the  object.  Place the object in a jar and place several drops of superglue into the jar.  Be sure not to get the superglue on the print.   Close the lid of the jar and wait approximately 30 minutes.  The print will appear to be white.
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