After a team completes a cache and has all the correct answers, they are provided with a clue card that will help them determine the next waypoint in the adventure. The experimental set-up used by Daniel Attinger and colleagues in Iowa to study back-spatter blood stains. Passive bloodstain a. CLICK HERE! material presented in the introductory If you are looking at a corner and it looks like the letter "L," the interior is the inside of the L. Use the Scotch tape and the 8.5- X 11-inch paper to make two large sheets of paper, one for each wall. Hairs &Fibers Note Worksheet (PDF)- Student worksheet for the presentation. Small droplets that surround a bloodstain after it hits a surface 3. Updated worksheet using EDPuzzle videos to introduce These provide high-resolution images of blood stains generated under varied conditions, for training and research use (figure 4). Rated 5 out of 5, based on 23 reviews. Update 2016: The video is available at & 6-. Nevertheless, says Carriquiry, for many topics in forensic science we have managed to make important inroads and established some meaningful partnerships with forensic practitioners who see our work as a means to make theirs more objective and scientific . I use this presentation to introduce the topic of impression evidence and then students investigate tire tracks, tool marks, and shoe prints. At the end of the unit, they clean them off with a wet cloth and turn them in so they are ready for the next class! Fluids 2 073906) bullets is based on the well-known RayleighTaylor instability. The DVD set is available for rent fromNetflix and may be found at online stores. Quiz:Power of Evidence Quiz (PDF)Other Physical &Trace Evidence Resources: Trace Evidence Online (PDF)- Everything you need for a Year-long Course! Worksheet:Science of Ridges Student Notes (PDF), Presentation #3:Latent Prints (PPT) Wikipedia Contributors. My Toe Prints worksheet (PDF) - Students are always interested in examining their toe prints to see how they compare to their fingerprints. - Challenge your students to this word search/scramble using terms discussed in the Power of Evidence presentation. Remove the sponge and let the pattern completely dry. In addition, the reference card format will allow special education students (and other students with learning challenges) to focus on the lesson and avoids possible frustration at trying to keep up with the class notes. I start each class period with a warm-up activity targeting forensic science concepts and other skills (observation, problem-solving, etc.) ABO Blood Type Worksheet - Codominance.doc, BLOOD AND BLOOD ANALYSIS UNIT 6_PART 1.ppt, BLOOD AND BLOOD ANALYSIS UNIT 6_PART 2.ppt, Blood Typing Activity Calculating Blood Probabilities.doc, QuestionsforReading_BloodStain and Blood Spatter Evidence.pdf, READING_BLOODSTAIN AND SPATTER EVIDENCE.pdf, The Forensics of Blood Reading Questions.docx, Unit 2.5 - Handwriting and Counterfeiting, Unit 2.5 - Handwriting and Document Analysis, Unit 3 - Criminal Law Background and Fingerprinting, Unit 4 - Tool Marks, Casts, and Impressions, Unit 5 - Death: Meaning, Manner, Mechanism, Cause and Time. Pre-made digital activities. Reference Card: Forensic Entomology Card (PDF) - This two-sided handout replaces the worksheet for the entomology lesson.Questions about the reference cards?See the note at the top of this page. The lesson can be adapted to fit any holiday in order to be used at other times of the year. Donut-shaped cells that carry oxygen throughout the body. purchased sets of bones from - Add 160 mL of corn syrup to the bowl and mix thoroughly. Past Lives episode from Forensic Files DVD. The size, shape, and distribution of bloodstains are examined in order to determine the physical events and mechanisms that gave rise to their origins. In 2011 physicists Christopher Varney and Fred Gittes at Washington State University put the projectile-motion equations, including gravity and drag, into a form that uses all the data inherent in a set of spatter bloodstains (Am. Bones Magazine - A great Characterization of Bloodstains Jig-Saw. A PowerPoint is available to introduce the activity and challenge. Also check out the online activites and information on the. Activities, Laboratory. Finally, the team found the number of resulting stains, their areas, impact angles and distribution with respect to distance (figure 2). Its analysis used percolation theory, which describes available paths through randomly arranged clusters. Forensic Files fits well with the impression analyzing bite mark impressions using This is one of the established BPA methods that deeper physical analysis can improve. 0 50100 200 300 300 cm 6 4 7 8 3 240 cm 2 Wall plan Unit 5 MC Test. See if you can determine the location of the sponge using the angle of impact calculations. In another effort, Attingers team has published back-spatter patterns of human blood produced in the lab by gunshot (figure 3), with rigorous control of the firearms and ammunition used and the physical arrangement (Data in Brief 22 269); and a second set of blood patterns produced by blunt instruments (Data in Brief 18 648). Course BIG BUNDLE! Through the help of our local YouTube as the previous links I had By measuring the length and width of the wide part of each spatter mark, you can determine the angle of impact. - This lesson introduces students to the blow fly's life cycle and the accumulated degree hour (ADH) used by forensic entomologists for estimating the time of death. Ihave also had good luck with their Perfect Ink fingerprint ink pads listed on the "Genuine Forensic &Crime Scene Materials" page.NOTE: Use Ultimate Flash Faces as an alternative for the Although the researchers note that more experiments are needed, their results are significant steps toward a real, physics-based theory of spattering. - Thanks to for each section. The DVD is available through Tape the large sheets into the corner. For BPA in particular, the NAS report noted the complexities of fluid dynamics and indicated that BPA analysts should understand the physics involved. Carolina Biological, and Calculate the angle of impact of each stain. Blood Basics Card w/ Blood Typing Lab - This two-sided handout replaces the worksheets for the first two presentations and blood typing lab.Bloodstain Science Card with Blood Spatter Lab - This two-sided handout replaces the worksheets for the Bloodstain Science presentation and lab.Blood Basics &BloodstainScience Card (PDF) - This two-sided handout goes with the Blood Basics, BloodTyping, &Blood Spatter presentations. Be sure to put on clothes and shoes that are okay to get stained. The theoretical results so far show the value of the fluid dynamics approach but also that its complexity can add uncertainties to the analysis, for example through the variable properties of blood and blood stains. *Please be sure you have access to the video before making your purchase. In the video, Kalia and Carolyn apply forensics to a birthday party crime scene. 7 (title, teacher instructions, 3 pages of blood stains, student worksheet, answer key) $2.00. Instead of using the incapax from the fingerprint unit, the students create their own "ink" by rubbing pencils on an index card and then pressing it to their toes. In other outreach, BPA researchers also present talks and training sessions at professional societies. Proficiency Testing Page 25 . These large sheets of paper should fit onto as much of the walls of the corner that you found in step 1 as you or a helper can reach. However, Bryan is nearly 80. be found You should now have about 1 cup of simulated blood. You will want your sound on or to plug in headphones . Introductory Presentation:ForensicEntomology (PPT), Worksheet:Forensic Entomology Student Notes (PDF). Lynn Peavey - My source for fingerprint brushes and other fingerprinting equipment. Unit Review. I've even found a number of them on YouTube. Write to us at available that can be used with any of the project ideas from their archives. NOTE:I highly recommend the magnetic fingerprint wands and dust if you have the money available to purchase them. be found. free subscription to the Science Buddies, a 501(c)(3) public charity, and keep our resources free for everyone. During this lesson students learn about the use of chromatography in crime investigations and use paper chromatography to test black markers. Since 2016 these researchers have developed fluid dynamical theories for gunshot back spatter and forward spatter, where blood drops travel respectively against and with the direction of the bullet and display different characteristics. <> ** As a bonus, there is also a document with links to digital versions so students can complete these in a Google Doc posted to your Google Classroom.Files include. Home Science Tools, can be used at the junior high level. They use the letters that remain in the puzzle to figure out a mystery word. FBI Crime Lab video worksheet These two papers and others analyse the behaviour of blood drops after they have been formed, to enhance standard BPA. This activity goes along with the 8- Toxicology Ch. with the anthropology unit as it involves Iuse activities from Reference Cards: CrimeScene Basics (PDF) &Eyewitness Basics Card (PDF) - These handouts replace the worksheets for Crime Scene Basics and Eyewitness Basics. We use cookies and those of third party providers to deliver the best possible web experience and to compile statistics. Graphic Organizer (PDF)- Thanks to Luann Snider for submitting this worksheet that can be used with any of the Forensic Files episodes. Explain. Find a location at your home or at school where you can conduct blood spatter experiments without making too much of a mess. Hair &Fiber Challenge (PDF)- I used my microscope camera to capture images of the various hairs and fibers the students observed in class. Presentation: - My source for fingerprint brushes and other fingerprinting equipment. them in sheet protectors. I collected a variety of maggots (species and sizes) as well as pupa and preserved them in glass vials with 50% isopropyl alcohol. By taking measurements and observations of blood spatter, the investigators and forensic scientists can determine how the victim was hurt, what objects were used, and where in the area the wound was inflicted. In real life, crime scene investigators are just as interested in making sure that justice prevails, and they are very meticulous. Calculate the angle of impact for each spot using Equation 1, below. If blood drops on a concrete surface compared to a tile surface, what is the difference in the resulting patterns? Pages. Use the teaspoon to add the simulated blood to the sponge, teaspoon by teaspoon, making sure not to soak the sponge. do not work. Transfer bloodstain c. Past Lives episode from Forensic Files DVD. For comparison, the linear trajectories overestimated the launch height by 100%. Add highlights, virtual manipulatives, and more. lesson available - and see the other resources available. She toilet papered my room and the students Satellite d. A pointy protrusion from the edge of the . Traditionally practitioners of blood-pattern analysis trace a straight-line from the stain at the impact angle to reveal where the blood originated. The Science Spot was developed in March 1999 by. Patterns produced are often characteristic of the nature of the forces which created them. If you need help understanding trigonometry, examine the the source listed below. DNA Evidence (PDF). But according to a startling, people. The cards are printed on card stock (back-to-back) and laminated for student use. A witness, who was rated as expert in the forensic technique of blood pattern analysis (BPA), interpreted these spots as placing Bryan near his wife when she was shot a testimony that was at the forefront of Bryans conviction. teacher also mark their lips on a plastic The challenge is made more difficult because blood is a complex fluid containing both liquid (the plasma) and solid (the blood cells) components. (2015, October 1). -7fBt Projectile bloodstain b. I developed this geocaching activity for use with the CSI summer camp program at the Smithsonian in DC. This topic of inquiry can be a little scary. !These forensics activities will take 1-5 class periods, depending on how you use them. The author would like to thank Mr. Geoff Bruton of the Ventura County Sheriff's Department Forensic Sciences Laboratory for helpful discussion and for editing this project. When printing this document, you may NOT modify it in any way. When drops of blood hit the floor at an angle, they produce elliptical stains, where their width-to-length ratio gives that impact angle. Students will read the statement, determine if it is true or false, and if false, make it correct it. *Deadly Valentine (Season 10, Episode 16)Episode Summary: An obstetrician returned home from the hospital and. A person must be trained in science and forensic investigation to become a blood spatter. The traces include drips, smears and spatters, which are created when drops of blood radiate from the impact of a bullet or blunt instrument until they encounter a surface and stain it. - Students simulate electrophoresis and DNA fingerprinting to solve a crime. Use the contact form on their website to Blood Spatter Analysis in three parts. I have also created several warm-ups that incorporate CSI-related videos that are available online. Your students will watch the video and answer questions while building their understanding of crime sc, This WS goes with the Smithsonian Channel Series Catching Killers. Our top priority is student learning. make my sample "slides". A link to the digital - Check out the collection of links available at the site for activities investigating DNA. The forensic scientists then use the evidence to reconstruct what occurred at the crime scene. zw Make sure to line up the string along the long axis of the spatter (along the ellipse). on the screen so they could *Video is necessary for completion of this. But this work is more than just an academic exercise. The interpretation of forensic evidence is not always based on scientific studies to determine its validity, it stated. You may print and distribute up to 200 copies of this document annually, at no charge, for personal and classroom educational use. Mix in 23 tsp. NOTE: I use a thermal laminator and pouches to make Lip Print Activity See the list of supply companies at the bottom of this page. The lesson can be adapted to fit any holiday in order to be used at other times of the year. which is geared towards the high school level, but For example, drops of blood that strike the floor at an angle will create a set of elliptical stains, whose width-to-length ratio gives the impact angle (figure1). Incorporate 2 drops of green food coloring. Past Lives (PDF), Zodiac Killer (PDF), Over &Out (PDF), Hairs &Fibers (PPT) - I use this presentation to introduce the use of hairs and fibers as evidence. PDF. Christmas Cookie Mystery- Use this lesson listed on the Chemistry Lessons page to investigate white powders. This is a serious problem. A separate report in 2016 from the US presidents Council of Advisors on Science and Technology written by the director of the Office of Science and Technology Policy together with a panel of scientists echoed this critique. Crime Case Studies a. Good prices and service! 11- Ballistics Ch. Unit Review:Fire BasicsReview (PDF) and Fire Basics Review Answer Key (PPT) - Thanks to Christopher Hunter for sharing these materials.Unit Assessment:Fire Basics Quiz (PDF) - Thanks to Christopher Hunter for sharing this quiz. document.. High Speed Digital Video Analysis of Bloodstain Pattern Formation from Common Bloodletting Mechanisms. Can be used as a classwork assignment, assessment, or review. Sidney Perkowitz explains how understanding the physics behind the blood distribution could help uncover the truth. Buy licenses to share. Physics World represents a key part of IOP Publishing's mission to communicate world-class research and innovation to the widest possible audience. The challenge is set up as a race to see which student team can be the first to correctly identify them. Please check that you ha, . For example, Attinger and co-authors have written a tutorial paper in which they discuss the forces at play in fluid dynamics and how they determine the behaviour of blood drops at a crime scene (Forensic Science International 231 375). A, This activity challenges students to match tool impressions from a set of 12 tools. following episodes: FACES software. 12- Other Evidence (Tool Marks, Casts & Impressions, and Glas, Vocabulary Lists, Introduction Activities, and Dictionary, Vocabulary lists and chapter introduction activities, as well as a complete, Dictionary which includes 191 words and their definitions. . But mechanical engineers and fluid dynamicists Alexander Yarin and Patrick Comiskey from the University of Illinois at Chicago, together with Daniel Attinger at Iowa State, have gone further. ***No activities or, :Lab Safety & ScienceHistory & CareersForensics & the Crimina, This Cornell-style test was made for a high school forensics class covering a unit on, but can be used in any biology, anatomy/physiology, or general, patterns.