Tag Archives: Detective Skills

DNA Fingerprinting

DNA Fingerprinting

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DNA is found in the nucleus of cells. Our bodies are made of cells. Each person has a particular DNA in the nucleus of their cells. If you can get a sample of a person’s cells, like a hair or a drop of blood, you can see what their DNA looks like in a lab. A suspect’s DNA can be compared to DNA found at a crime scene.

In the game csi: Squeak Sneak, Fetch’s squeaky toy is missing. Look at the crime scene and collect evidence. Use DNA to finger the real culprit.

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Now watch the Dragonfly TV Forensic Whodunnit Video: The Cake Caper. Somebody has tampered with a birthday party table. The investigators find fiber, saliva and fingerprint evidence at the crime scene, so they gather fiber, saliva and fingerprint samples from everyone they think is a suspect.  Watch them analyze the evidence using a forensics lab to help solve the mystery.

Want to know more about DNA and DNA Evidence? Try these books:

Blood and DNA Evidence Science Beats Crime Amazing DNA
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In the Forensics Lab & Mickey Mouse Mysteries

In the Forensics Lab & Mickey Mouse Mysteries

josecriminologist_regIf you think you might like forensic science, you might like to take a look inside a crime lab or listen to someone who is a forensic scientist. Forensics are scientific tests that are used to solve mysteries. A forensic scientist might work in a lab or might go out to places where crimes are committed, the crime scene. Watch this video of Jose. He uses forensic science to solve mysteries. By testing physical evidence he identifies suspects or helps prove people innocent.

forensicslab_regTry this tutorial: TruTV Forensic Lab What’s Inside to get a brief explanation of what goes on in each area of a forensics lab. You will also see the equipment that is used and learn how science is used to help solve mysteries.

Now, take on online challenge. Follow a case from start to finish as it makes its way through various units of the FBI Laboratory. Every time you see the words, “How did they do that?” click on the link to read the details of how that unit processed the evidence. Website: FBI Investigates a Strange Flashlight


Forensic Books:

Bones Never Lie Forensics Club CSI: The Case of the Digital Deception Forensic Secrets Blood and DNA
Crime Lab Detectives Forensic Science How to be a Crime Scene Investigator CSI Expert Forensic Science Projects with a Crime Lab You Can Build
In the Laboratory
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Invisible Ink

Invisible Ink

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If you want to communicate secretly with another person, you might decide to write your message in a secret code or you might choose to write your message in invisible ink. These three websites give you directions for writing a message in invisible ink. Give it a try!

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Handwriting Analysis

Handwriting Analysis

Handwriting Analysis

No two people write in exactly the same way. Detectives use handwriting analysis to solve mysteries. A handwriting expert can tell whether or a not a person wrote a letter or note. Even if a suspect tries to disguise their handwriting, a good handwriting expert can tell. The more samples of the suspects handwriting there are, the easier it is for the expert to identify writing patterns of the person being tested.

Try out your skills analyzing handwriting playing these two games: CSI Handwriting Analysis Game (scroll to game 2) and Fetch CSI: Tugboat Thug.

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Face Recognition

Face Recognition

artofcrimedetection_regRemembering a face is important, especially for the witness of a crime. A police sketch artist is trained to draw a picture of a suspect based on what a witness can describe about the suspect’s face. In the game The Art of Crime Detection you will witness two crimes. After each, you will be asked to help sketch a picture of the suspect. At the end, you can read an interview with a real police sketch artist.

Next, you can play How is Your Memory for Faces? You will look at a face and try to memorize features on the face so that you re-create what you saw. It’s harder than it sounds.

 

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