blood spatter analysis worksheet

- Students simulate electrophoresis and DNA fingerprinting to solve a crime. The following website is a bloodstain spatter analysis tutorial. They use the letters that remain in the puzzle to figure out a mystery word. SupplyCompanies - Christina Beatty for sharing her booklet that she uses with her students to help them understand blood typing.. I usually do the introductory lesson to provide an overview of many types of physical evidence and then spend time investigating several of them in more detail, such as fingerprints, impression evidence (tire tracks), hairs & fibers, chromatography, blood evidence. Bloodstain pattern analysis. fire department, students explore the basics of fire Put the lid on the container and set the simulated blood aside. FBI Crime Lab (PDF) 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. Please enter a search term in the text box. They found that a plot of the impact angles for the stains versus the inverse of their horizontal distances from the vertical axis of impact gives a valid result for the height, provided that the launch angles for the drops are not too widely distributed. Review:Unit 1 Review Worksheet (PDF) and Unit 1 Review Key (PPT). Presentation: science and arson investigation. Rev. When you aren't looking, have a volunteer hit the moistened sponge with the hammer, at a different location on the paper, and then remove the sponge. While this correctly maps the paths along the floor (grey lines), straight-line trajectories (dashed lines) overestimate the vertical height of the impact because the blood would have taken a modified parabolic path (blue) due to gravity and drag. With your purchase, you will . The video is approximately 25 minutes long. Game rules and pattern cards are provided in the download. Reused by permission of Elsevier). available that can be used with any of the Finally, the team found the number of resulting stains, their areas, impact angles and distribution with respect to distance (figure 2). allows students to practice making and Quizzes with auto-grading, and real-time student data. A brief outline is available in PDF format - Quarter Outline and a list of supplies is available at the bottom of this page. She, went around the Do the ellipses end in tails? Forensic Science Course BIG BUNDLE! Bones Magazine - A great Word bank and answer key provided.Please visit my store! Add highlights, virtual manipulatives, and more. Mark an "X" on the paper on the ground, about 58 mm from the corner. Tire Tracks Challenge (PDF) - This lesson idea was submitted by Sandy Powell, a member of the Middle School Science Yahoo Group. I've even found a number of them on YouTube. 48 Hours, CBSNews.com. Spine -- The pointed or elongated stains which radiate away from the central area of a bloodstain. Long for sharing this video and worksheet that Shellye's Health Sciences, . Make a Hygrometer to Measure Humidity STEM activity. 9- Questioned Documents (Handwriting Analysis, Forgery, Counterfeiting) Ch. teacher also mark their lips on a plastic Once the crime scene investigators gather all of the available evidence, they hand it over to the forensic scientists for analysis. 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). the blood spatter unit. The videos are Some of the notes are followed by short activities for students to complete with a partner.Comes in both PDF and editable Word (.docx) Files.Topics include:1- Intro to Forensics2- The Crime Scene3- Hair as Evidence4- Fiber Evidence5- Fingerprints6-, Spatter7- DNA Fingerprinting8- Toxicology9- Handwrit, Rated 4.83 out of 5, based on 142 reviews, patterns tell CSIs about a crime? Traditionally practitioners of blood-pattern analysis trace a straight-line from the stain at the impact angle to reveal where the blood originated. 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. Michelle Maranowski, PhD, Science Buddies. Origin/Source -The place from where the blood spatter came from or originated. Permanent Marker Chromatography - We used permanent markers and rubbing alcohol to "decorate" our lab aprons or white t-shirts that the students brought to class. Shellye's Health Sciences, analysis using this engaging PowerPoint with student notes guide and, . and go lecture slides, guided student notes, lab, and vocabulary activity right at your fingertips!Perfect for remote learners as all documents have google slides access and digital options AS WELL as fun for the in-class student.Includes:26-slide PowerPoint over presumptive and confirmatory, testsStudent notes guide (printed OR FITB on google classroom)Kastle-Meyer lab with teacher guide and lab prep instructions (includes a remote-learning option, and 2-page teacher answer key. I developed this geocaching activity for use with the CSI summer camp program at the Smithsonian in DC. *Video is necessary for completion of this, . Does the impact angle of the drop correspond to the angle of the cardstock? What kind of evidence does a crime scene investigator collect at a crime scene? CRASH:The Science of Collisions, You will determine the angle of impact of just 56 spots on the walls. This shows the length, a, and the width, c, of the blood spatter. be found Presentation:Fire Science (PPT)Worksheet:Fire Science (PDF). Classification Charts Page 17 3. This is the result of a drop of blood hitting the surface at an angle of impact, . After discussing the information on the reference card, students create DNAkeychains, which are used for an identification activity in which students have to match their keychains with a paper model. fire department present a fire safety program for 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). Passive bloodstain a. Quiz:Power of Evidence Quiz (PDF)Other Physical &Trace Evidence Resources: Trace Evidence Online (PDF)- Small droplets that surround a bloodstain after it hits a surface 3. If you need help understanding trigonometry, examine the the source listed below. Do the strings converge at the location where you hit the sponge? A digital scale that would be suitable (the Fast Weigh MS-500-BLK Digital Pocket Scale) is available from, Container with lid, should hold about 2 cups of liquid, Graduated cylinder, 250 mL; available from, Clothes and shoes to wear that might get stained, Goggles; available at your local hardware store, Adhesive circles; generally used to reinforce punch holes in paper and are available at office supply stores. resource available from the Kids Discover See the list of supply companies at the bottom of this page. 7- DNA Fingerprinting Ch. Click here to visit the Daily CSI Challenges page Science Friday:Finding Fault withForensics, Power ofEvidence:Physical Evidence (PPT), Power of Evidence:Physical Evidence Card (PDF), Fingerprinting Basics Student Notes (PDF), "Ernie's Exit"Blood Typing Lab - "Cheap"Version (PPT), Blood Typing Basics - "Cheap"Version (PDF), Bloodstain Science Student Notes &Lab (PDF), Bloodstain Science Card with Blood Spatter Lab, Blood Basics &BloodstainScience Card (PDF), Understanding Car Crashes:It's BasicPhysics. and DNA. 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. I printed several sets of this worksheet on card stock and laminated them to keep them for future classes. following episodes: Unit 5-Blood And Blood Spatter - Mrs. Slovacek's Science. - Student worksheet for the presentation. also be incorporated into driver's education - 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. QuestionsforReading_BloodStain and Blood Spatter Evidence.pdf View Download . learn to identify the main bones in the classify the lip prints and identify the one This episode from Forensic Files fits well Links for students can be 12/11/18. In Part 1, the students diagram the direction of blood drops. Fingerprint Guide (PDF)- This one-page handout includes examples for all of the ridge patterns and characteristics discussed in the fingerprinting lessons.Other Fingerprinting Resources: Fingerprint Challenge (PDF) - Students use their investigative skills to match fingerprint samples. - I used my microscope camera to capture images of the various hairs and fibers the students observed in class. Worksheets:Fingerprinting Basics Student Notes (PDF), My Prints (PDF), Presentation #2:Science of Ridges (PPT) We calculate the percentages for each pattern and discuss how it relates to the expected percentages presented in class. This should result in a spatter pattern on the paper. For each of 40 separate blood stains, they determined its width and impact angle, and, using a commercial 3D surface scanner, measured the volume of the stain, from which they found the volume of the original drop. 5 0 obj Students use overhead markers to add notes to the pages as we discuss each lesson and keep them to review for the unit quizzes. Measure the distance from each stain to the AOC. Terminology List Page 22 4. If you have any comments (positive or negative) related to purchases you've made for science projects from recommendations on our site, please let us know. NOTE: I use a thermal laminator and pouches to make http://www.hulu.com/watch/147911Flame TestFlame Test Video at YouTubeFire Safety Checklist from http://www.sparky.org/family.html, During this unit students investigate Newton's Laws of Motion to analyze an accident scene to determine the sequence of events that lead up to the accident, explain damage resulting from the accident, and "solve" cases. - Iuse this activity with my students to analyze the distribution of fingerprint patterns in each class. Are you getting the free resources, updates, and special offers we send out every week in our teacher newsletter? Can be used as a Worksheet, Activity, Mini-Lab, or Homework. went around the The direction of the long axis shows the direction in which the drop was traveling when it hit the surface. store that provides a good background of Course BIG BUNDLE! FILES / MEDICAL DETECTIVES: As of January 2022, the entire episode is available free on You Tube which could make it ideal, This resource includes 15 unit planners that cover all of the TEKS for, . Record all of your observations and data in your lab notebook. serology unit review key 2016.pdf. Memory Match Game (PDF) - This game challenges a student's ability to remember what they've seen as they examine cards with a variety of patterns on them. 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 . 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. 5- Fingerprints Ch. bite marks. Students complete the worksheets as they watch the Listed below are the powerpoints, worksheets, and other resources I use during the class. These paths converge, providing a position from which the blood originated. When drops of blood hit the floor at an angle, they produce elliptical stains, where their width-to-length ratio gives that impact angle. For example, engineers study failure analysis and evaluate the quality of construction and manufacturing of structures involved in a crime or catastrophic event. ***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. Hydroponics in a 2-Liter Soda Bottle STEM activity. playing with fires can cause major damage and Observe the spatter. Teacher information, a student worksheet, and a sample page of my challenge are provided in the download. The drop of simulated blood was traveling in the direction of the long axis as it turned into an ellipsis when it hit the paper. But with no strict educational requirements for certification as a BPA expert theyre trained only to follow packaged procedures the report concluded that The opinions of bloodstain pattern analysts are more subjective than scientificThe uncertainties associated with [BPA] are enormous. In 2018 the Texas Forensic Science Commission reached similar conclusions about the Bryan case, calling the interpretation of the BPA evidence inaccurate and scientifically unsupportable. She had one 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. site search to find a wealth of Join two investigations and see how the ever-evolving, of bloodstain pattern analysis helped investigators solve both the 1954 murder of the wife of a prominent doctor and t, MORE FORENSIC FILES! Students will read the statement, determine if it is true or false, and if false, make it correct it. Good prices and service! purchased sets of bones from Remove the sponge and let the pattern completely dry. 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. An example of blood back spatter on a card target, produced by researchers at Iowa State University using the set-up shown in figure 4. Terms and Definitions Accompanying Drop A small blood drop produced as a by-product of drop formation. Trap (PDF), Zodiac Killer (PDF), Over &Out (PDF). - Students examine their own hair sample as well as other animal hairs to complete this worksheet. (2020, June 23). TPT empowers educators to teach at their best. from the culprit. Answer key provided.Please visit my store! For BPA in particular, the NAS report noted the complexities of fluid dynamics and indicated that BPA analysts should understand the physics involved. Passive bloodstain a. Wish List. 7 (title, teacher instructions, 3 pages of blood stains, student worksheet, answer key) $2.00. As of March 2019, the entire episode is available free on You Tube which could make it ideal for computer lab or homework assignments (technology access provided). Bloodstain Analysis Worksheet Part 1 - Match the vocabulary word to the appropriate definition 1. Unit 5 MC Test. & - Besides temperature, the viscosity of blood also depends on the percentage of red blood cells, which varies by individual and could affect approaches like that used by Laan and colleagues. teachers at her school on paper and then put Introductory Presentation:Power ofEvidence:Physical Evidence (PPT)Student do not work. 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. Forensic Files fits well with the impression their several of the activities targeting Newton's Laws Update 2016: The video is available at Use the contact form on their website to }-MrV1Xgj9Z08}f\?gAzxC"=tk6UH> SJ` aDnzP`!+2!. Diagram of a blood spatter on the ground leaves a distinct tail in the direction it was traveling. In the video, Kalia and Carolyn apply forensics to a birthday party crime scene. Sidney Perkowitz explains how understanding the physics behind the blood distribution could help uncover the truth. Reference Card: Chromatography Basics (PDF) - This two-sided handout replaces the student worksheet for the presentation.Questions about the reference cards?See the note at the top of this page.

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