NSTA Annual ConferenceMarch 29, 2012 Kristen Kohli

Kristen Kohli – kkohli@buhsd.orgEstrella Foothills High Schoolhttp://www.kohliscience.com

Broad appealGives students a chance to explore a

variety of sciences: Chemistry Biology Physics Earth Science

Increase engagement & inquiry in science

NSTA ConferencesTextbook evaluationsState standardsOnline resources

http://bsapp.com/forensics_illustrated/ http://www.theforensicteacher.com Available resources

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

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

Iodine demo10 cardsDust & matchVirtual labs at

learn.genetics.eduGel electrophoresisBlood typingSpatter patterns &

trigonometry

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

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

Tool marks & Play-DohMikrosil castsTurkey bone marksCollecting cartridge casingsFirearmsid.comTrajectory & trigonometry – Kennedy

clip

Day One: Project

introduced Groups of

four Ten minutes

to determine roles for scene

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

Evidence at the Scene: Blood/Impressions/Soil

Evidence at the Scene: Hair Victim Girlfriend (perpetrator) Guinea pig

Evidence at the Scene: Glass & Fingerprint

Evidence at the Scene: Bullet casing & fingerprint

Evidence at the Scene: Acetate cloth with lily pollen

Evidence at the Scene: Bullet hole

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

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

Guest speakers FBI SRO

ParentsGrants

Kristen Kohlikkohli@buhsd.org

http://www.kohliscience.com