Students watch in amazement as the metallic green "Crystal Violet" is added to water and turns vivid purple. Crystal violet is used to lift fingerprints on hard to print surfaces such as duct tape.
- Students watch in amazement as the metallic green "Crystal Violet" is added to water and turns vivid purple. Crystal violet is used to lift fingerprints on hard to print surfaces such as duct tape.
- A student compares her fingerprints to determine which types she has.
- Learning to use fingerprint powder.
- Students were allowed to use fingerprint powder of all types when they processed their evidence.
- The Crystal Violet reveals a perfect print on a piece of duct tape.
- Students study footprints to see what they can learn.
- These footprints all give clues about what people were doing when they made them.
- Everybody got to use synthetic blood to learn how to test for blood. If the swab turns hot pink, it's positive.
- Positive! Since synthetic blood contains protein, it reacts the same as real blood when tested with real crime scene investigation materials.
- A Luminol-like spray showed the class the presence of "blood" when the lights were turned out.
- After lunch, Professor Jones briefed the students on the crime and let them go discover the scene and process all of the evidence they could find.
- Students observed what appeared to be blood on a table. Tests confirmed that it was positive. Blood was also discovered in other locations.
- A student logs fingerprint evidence, after taking prints, comparing them to samples, and determining who they belonged to.
- These spots looked like bloody fingerprints on one wall near a mural.
- A student takes a sample of the fingerprints to test for blood.
- Test results came back negative -- it was brown paint.
- Students used a spray to test for blood on the kitchen floor.
- Professor Jones helps families process evidence.
- Students compare fingerprints.
- Jones answered questions as the suspects for the group, providing information such as eyewitness accounts and alibis. By the end of the class, the group used all of the evidence to solve the crime.
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