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NSTA Annual ConferenceMarch 29, 2012 Kristen Kohli
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Kristen Kohli – [email protected] Foothills High Schoolhttp://www.kohliscience.com
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Broad appealGives students a chance to explore a
variety of sciences: Chemistry Biology Physics Earth Science
Increase engagement & inquiry in science
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NSTA ConferencesTextbook evaluationsState standardsOnline resources
http://bsapp.com/forensics_illustrated/ http://www.theforensicteacher.com Available resources
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Introductory Unit – 1 week Common Trace Evidence (hair, fibers,
pollen, spores, sand, soil) – 3 weeks Fingerprints, DNA, & Blood – 3 weeks Lessons from the Body (death, forensic
entomology, forensic anthropology)- 2 ½ weeks
At the Scene (glass, impressions, accident reconstruction) – 2 ½ weeks
Weapons & Tools – 2 weeks Summative Crime Scene Project – 1 week Case studies & careers in all units
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Collecting materials Hair Pollen/spores Sand/Soil
Introductory inquiry activities ID differences Unknown samples Direct instruction Application
How to photograph Polymer worm demo Burn lab Soil/sand lab
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Iodine demo10 cardsDust & matchVirtual labs at
learn.genetics.eduGel electrophoresisBlood typingSpatter patterns &
trigonometry
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Determining driver using autopsyDermestid beetlesVisible Proofs activities:
http://www.nlm.nih.gov/visibleproofs/Stomach content labPBS Crime Scene Creatures website
& Body FarmForensic anthropology & facial
reconstruction webquest
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Obtaining glass samplesGlass density labWater bead demo Becke lines & submersion testsYoutube clips on breaking glassCasting shoe prints & comparingDo-it yourself drag sledCrash reconstruction at Edheads.orgStyrofoam plate bite comparisons
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Tool marks & Play-DohMikrosil castsTurkey bone marksCollecting cartridge casingsFirearmsid.comTrajectory & trigonometry – Kennedy
clip
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Day One: Project
introduced Groups of
four Ten minutes
to determine roles for scene
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Day Two: Visit the scene Ten minutes per group Armed with digital camera Supplies available at scene: ▪ Measurement tools: calipers,
meter sticks, metric wheels▪ Evidence bags, labels,
numbers, bindle paper, & tape▪ Trajectory rods, protractors, &
string▪ Forceps, gloves, tape
Order tests, samples, info
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Evidence at the Scene: Blood/Impressions/Soil
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Evidence at the Scene: Hair Victim Girlfriend (perpetrator) Guinea pig
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Evidence at the Scene: Glass & Fingerprint
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Evidence at the Scene: Bullet casing & fingerprint
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Evidence at the Scene: Acetate cloth with lily pollen
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Evidence at the Scene: Bullet hole
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Day Three: Science lab Femur & pelvis evidence Test results Self-directed Supplies: light microscopes, dissecting
microscopes, rulers, dusting powder and brushes, liquids with refractive indices of 1.33 and 1.47, slides, coverslips, tape, candles, forceps, magnifying glasses, watch glasses, test tubes, clear nail polish, hydrochloric acid, acetone, magnets, barium chloride, acetic acid, UV light, petri dishes, and mortar and pestles sets
Additional test/info requests
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Day Four: Computer lab Final lab request results Time to prepare Power Points
Assessment: Chain of custody Sketch of scene Careful crime scene teamwork Safe lab work & knowledge of testing
procedures Evidence collection , testing, & correct analysis Presentation of findings
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Guest speakers FBI SRO
ParentsGrants