C.s.i. Gk-12 Ink Analysis Station C.S.I. GK-12 Water Analysis Station C.S.I GK-12 Fiber Analysis Station C.s.i. gk-12 Fingerprint Analysis Station C.S.I. GK-12 Hair Analysis Station C.S.I. GK-12 Handwriting Analysis Station Handwriting Analysis Instructions 1. Compare the note from the crime scene to the writing samples of the suspects. 2. Make your observations and record your results in your Evidence Logbook. UNKNOWN NOTE DR. STEWART ROB RUTHIE TIM WRITING STYLES ANY OTHER OBSERVATIONS Ink Analysis Instructions 1. Test each pen by using a chromatography method and record your results in your Evidence Logbook 2. Use one pen per filter paper. 3. Place a dot of ink 2 cm from the bottom of the filter paper. 4. Place the filter paper with dot in different solvents of water or alcohol. Make sure the dot on filter paper is not submerged in solvent. 5. Test the solubility of each pen mark in water or alcohol. If the ink of the pen is soluble then the pen mark will move up the filter paper. If it is not soluble then the pen mark will not move. 6. Record the solubility of each pen. 7. Draw what you see. 1. VIS-À-VIE WET ERASE FINE POINT PEN 3. PRECISE 2. V5 PAPERMATE EXTRA ♥♥ PEN FINE PEN UNKNOWN TYPE OF PENS PEN 4. VIS-À-VIE PERMANENT MARKER (i) COLOR OF INK SOLUBILITY WATER OR ALCOHOL DRAW THE WHAT YOU SEE. Fingerprint Analysis Instructions 1. Fingerprints were found on each cup at the crime scene. 2. Analyze each cup. 3. Wear gloves to work with the evidence. 4. Put a drop of Superglue in one bottom corner of the Ziploc back 5. Close the bag quickly with some air in it. 6. Wait 1 minute for fingerprints to develop. 7. Notice the different patterns of loops, arches, and whorls of the victim and of each suspect. 8. Record your findings in the Evidence Notebook by placing a checkmark under the identity of each fingerprint for each cup. TABITHA DR. FINGERPRINT (VICTIM) STEWART CUP 1 CUP 2 UNKNOWN ROB RUTHIE TIM CUP 3 CUP 4 Water Analysis Instructions Cups 1,2,3,and 4 are the same cups found with the unknown fingerprints. Liquid was also found out of these cups. Your job is to find out if there was tampering with the liquid. 1. Make your Observations and record them in your Evidence Logbook 2. Test the pH of the liquid found in each cup by using hydron paper. a. Place a drop of each liquid on a piece of hydron paper. b. Record the color of hydron paper. c. Record pH (look at color code on the hydron paper container) d. Place a checkmark if the liquid is acidic, neutral, or basic. e. Do this for each cup 3. Check to see if the liquid reacts with an indicator dye phenolphthalein. Phenolphthalein will react in the present of a strong base. a. Dip a Qtip in each cup of unknown liquid. b. Use a pipet and extract the indicator dye phenolphthalein. c. Place a drop of indicator dye phenolphthalein onto each Qtip d. Record the if there is a color change TEST EACH LIQUID HYDRION PAPER COLOR pH ACIDIC NEUTRAL BASIC PHENOLPHTHALEIN COLOR? CUP 1 CUP 2 CUP 3 CUP 4 Fiber Analysis Instructions Microscopic Comparison 1. Look at each fiber under the microscope. 2. Make your observations of each fiber. 3. Record your microscopic observations in your Evidence Notebook Combustion Test 4. Pick up one fiber at a time with a tweezers and place that fiber in the fire. 5. Burn each fiber 6. Observe what happens 7. Record your combustion observations in your Evidence Notebook FIBERS MICROSCOPE OBSERVATIONS UNKNOWN FIBER SAMPLE ROPE FIBER COTTON FIBER ACRYLIC FIBER COMBUSTION OBSERVATIONS Hair Analysis Instructions Microscopic Comparison 1. Keep the hair samples in the bag while you investigate who the unknown hair belongs to. 2. Look at each hair sample under the microscope. 3. Make your observations of each hair sample and the unknown hair sample found at the crime scene. 4. Record the color of each hair sample 5. Record the hair type of each hair sample 6. Record your microscopic observations of each hair sample in your Evidence Notebook HAIR SAMPLES COLOR HAIR TYPE STRAIGHT WAVY OR CURLY UNKNOWN HAIR SAMPLE DR. STEWART ROB RUTHIE TIM MICROSCOPIC OBSERVATION Suspect’s Information Dr. Stewart is a Reptile Specialist. Her hobbies are cooking and collecting wildlife specimens. She really enjoys reading The Princess Bride on her spare time. At the time of the crime, she was wearing a cotton t-shirt and jeans. She had a Vis-à-vie wet erase fine point pen in her pocket. Ruthie is an expert Skydiver. She instructs sky diving classes everyday when it is sunny. Her hobbies are the following: skydiving, bungee jumping, and rappelling. At the time of the crime she was wearing an acrylic sweater. A Precise V5 extra fine pen was in her pocket at the time of questioning. Rob is a Soap Taste Tester. His hobbies are juggling, computing, and bread making. He really enjoys studying out of Interactions in Physical Science Teachers Ed. Vol. 1. At the time of the crime he was juggling at the gathering. He was wearing an acrylic bow tie. At the time of questioning he had in his possession a Vis-a-vie permanent marker Tim is an Alligator Wrestler. His hobbies are kayaking, computers, camping and hiking. He loves to read the Bible. At the time of the crime he was wearing a cotton t-shirt and cargo shorts. In his cargo pocket he had a PaperMate ♥♥ pen . Map your Crime Scene A B 1 2 3 Victim Tabitha It all started a couple of days ago when funny things started to happen. Our victim Tabitha ,a canine groomer, started to use a particular soap that had a wonderful scent. Tabitha worked at a pet salon which was located on the top of a hill that was above a controversial reptile farm. All of the sudden Snappy the star alligator was found belly up. Snappy’s body was covered with the same scent of the special soap. Tabitha was very upset about this and called a gathering, where the primary reason for meeting was about Snappy’s death. During that time, the Skydiving association was meeting at the same location. The location of the GK-12 retreat was held at Mt. Sequoia. The Skydiving experts did not want to share Mt. Sequoia and an argument started. Later that day in the dinning room, several witnesses found Tabitha dead on the floor. What happened? Your job is to find who did it. Use only the evidence to determine who did it. Good luck CSI GK-12 team.
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