Tourist Trap 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. Nor is it likely that the legal standards for acceptance of BPA evidence will change soon enough to affect Joe Bryans upcoming appeal for a new trial. If you found an extended blood droplet as shown below at a crime scene, what does it tell you? I use this presentation to introduce the topic of impression evidence and then students investigate tire tracks, tool marks, and shoe prints. along with several human samples.. BPA is one of those areas in which science has a lot to say, she says. What if it were traveling nearly parallel to the wall? at the bottom of this page. Keep track of how many teaspoons you add as you go along. Reference Cards: CrimeScene Basics (PDF) &Eyewitness Basics Card (PDF) - These handouts replace the worksheets for Crime Scene Basics and Eyewitness Basics. She had one Bloodstain Analysis Worksheet.docx - Course Hero During this unit students learn about DNA and its use in forensic science. I set up 6 "evidence" packets for each of the four cases - pipe cleaner samples of "maggots" and "pupae" along with a case card. ABO Blood Type Worksheet_0.doc . In general, except for DNA analysis, the report found deficiencies in virtually every forensic technique including the analysis of hair, fibres, fingerprints and bite marks. Lip Print Activity This unit includes an "up close" look at hairs and fibers using microscopes and an assortment of prepared slides. The lesson can be adapted to fit any holiday in order to be used at other times of the year. *Please watch the video in advance of your students to gauge appropriateness. ** All files come in both editable Word .docx format and .pdf format. Presentation:Chromatography (PPT)Worksheet:Chromatography Notes (PDF). . human body as well as investigate the role During this unit students learn how to identify the different fingerprint patterns as well as other details that help investigators match fingerprints. When drops of blood hit the floor at an angle, they produce elliptical stains, where their width-to-length ratio gives that impact angle. In general, to become a forensic scientist, you need to study math and science. Materials:Teacher Information (PDF)CSIAdventure Presentation (PPT)Cache Cards (PDF)Clue Cards (PDF)Group Answer Sheet (PDF)Answer Key (PDF). While this correctly gives the projection onto the floor of the location of a gunshot wound, the straight-line procedure overestimates the height of the wound, since the true paths under gravity are parabolas modified by aerodynamic drag. in courtroom testimony, and when teaching bloodstain pattern analysis. Please e-mail me if you have any questions. Forensic Files Add . 8- Toxicology Ch. Tire Tracks Challenge (PDF) - This lesson idea was submitted by Sandy Powell, a member of the Middle School Science Yahoo Group. Satellite d. A pointy protrusion from the edge of the . We also analyze the distribution of patterns for males vs. females and discuss the results after students have completed the bottom section of the worksheet. The information gleaned from the blood stain can be utilized to estimate the assailant's height and the weapon used to perform the crime. She put the. The editable lesson includes practice slides for determining the angle of impact and point of convergence.The, (answer key included) has students determine the type of, and all associated characteristics they would expect to find in 3 different scenarios, as well as practice determining the angle of impact and point of convergence.In addition, . A stain created when an object passes through blood and moves it 2. Blood Spatter Lab Teaching Resources | TPT - TeachersPayTeachers your students. Basic knowledge of trigonometry is required. Hold one end of the string in place, with an adhesive circle, at the first spatter mark you chose to measure . What is the difference between a crime scene investigator and a forensic scientist? A stain created when an object passes through blood and moves it 2. print mystery activity. Bloodstain Worksheet.docx - Name Nick Vignoli Bloodstain Analysis These two papers and others analyse the behaviour of blood drops after they have been formed, to enhance standard BPA. I developed this geocaching activity for use with the CSI summer camp program at the Smithsonian in DC. This is a serious concern because BPA results have convicted people later shown to be innocent, as many believe Bryan to be; and because lack of confidence in BPA analysis may allow the guilty to go free. Explain. The challenge is made more difficult because blood is a complex fluid containing both liquid (the plasma) and solid (the blood cells) components. The cards are printed on card stock (back-to-back) and laminated for student use. 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. Teacher information and a student worksheet are provided in the download. 9- Questioned Documents (Handwriting Analysis, Forgery, Counterfeiting) Ch. Sidney Perkowitz isCharles Howard Candler Professor of Physics Emeritus at Emory University, US. Forensic Science Course BIG BUNDLE! Type. Reference Card: Power of Evidence:Physical Evidence Card (PDF) - This two-sided handout replaces the worksheet listed above. PowerPoint is available for this 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. Over 500 video clips were made of blood spatter experiments that are typically performed by individuals attending a basic bloodstain pattern analysis course. What kind of evidence does a crime scene investigator collect at a crime scene? The mixture must be smooth. Police investigators use BPA to work backwards from blood traces at a crime scene, allowing them to reconstruct the locations and actions of the people and weapons involved. Our top priority is student learning. Joe Bryan, once a popular and respected high-school principal in a small Texas town, has been in prison for over 30years. Update 2016: The video is available at Wall plan . Blood Stain Worksheets - K12 Workbook Can be determined based upon geometric appearance of the blood stains within a blood spatter pattern Describe surface tension. The bullet hole can be seen in the top left of the middle image. If you are squeamish, then do not look at this site. forensic science blood splatter worksheet. At the end of the lesson, I have students complete the Hair &Fiber Challenge to test their ability to identify various samples. We calculate the percentages for each pattern and discuss how it relates to the expected percentages presented in class. Check out the video in the Bibliography to see how Kalia and Carolyn solved this mystery! 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. Bryan maintains his innocence to this day. It became prominent in the US during the famous Sam Sheppard murder trial in 1955, and has played an important role in other murder trials since including those of football player and actor OJSimpson (19941995, verdict of not guilty) and music producer Phil Spector (20072009, retrial verdict of guilty). Rev. They can determine the angle of impact of the drops. Forensic Files episodes. large butcher paper., - Thanks to Dana 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. Now put yourself in the shoes of a forensic scientist. Say to Explorers: Bloodstain pattern analysis is a discipline of forensic science that examines bloodstain patterns at crime scenes. Introductory Presentation:ForensicEntomology (PPT), Worksheet:Forensic Entomology Student Notes (PDF). When printing this document, you may NOT modify it in any way. analyzing bite mark impressions using Skeleton Worksheet (PDF). Eyewitness Online (PDF). For comparison, the linear trajectories overestimated the launch height by 100%. Long for sharing this video and worksheet that Sign up today for your Blood Spatter Notes: Continued 3. Whatever that outcome, the extensive coverage of the Bryan case along with the NAS report and other evaluations of BPA have uncovered its problems and motivated progress toward a better physics of blood patterns. make my sample "slides". A link to the digital Forensic Science page at the Kid Zone. Add highlights, virtual manipulatives, and more. from their pets/livestock.My collection includes Z.8 Wy%0+kG;J7~)pRht0q xDo Teacher information, a student worksheet, and a sample page of my challenge are provided in the download. During this unit students learn about the basics of blood evidence. His latest books are Frankenstein: How a Monster Became an Icon (2018) and (forthcoming in 2019) Physics: aVery Short Introduction and Real Scientists Dont Wear Ties. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[580,400],'sciencespot_net-box-4','ezslot_8',152,'0','0'])};__ez_fad_position('div-gpt-ad-sciencespot_net-box-4-0');During this unit students explore the various types of physical evidence that can be found at a crime scene and learn how they are used to help investigators. fire department, students explore the basics of fire 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 . 6-. As opposed to other forensic disciplines, in BPA we actually have physical and fluid-dynamical models that can help answer questions such as those having to do with trajectory, point of origin and similar.. Crime scene investigators and forensic scientists can determine the position of the object that made the spatter pattern by taking measurements of the ellipses. 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). Repeat steps 211 at the same location, two additional times, with fresh materials. Click here to visit the Daily CSI Challenges page Back to top, During this unit students learn basic vocabulary associated with crime scene analysis as well as explore testimonial evidence (eyewitness accounts and FACES facial composites software to create - see the list of supply companies Knowing the angle of impact and the traveling direction allow investigators to place the blood-shedding event in three dimensions. Can be used as a classwork assignment, assessment, or review. BPA needs to take into account both gravity and drag (black) to get a more accurate estimate of where the bullet impacted. and DNA. I use simulated blood samples purchased from Ward's. . I also purchase my simulated blood kits from them. 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). The back-spatter analysis carried out for both regular (Phys. . Other lessons and activities are listed below. more. I purchaed a set of 15 for the Tape it to the ground with clear tape. Presentation#1:Blood Basics (PPT)Worksheet:Blood Basics Student Notes (PDF), Presentation #2:"Ernie's Exit"Blood Typing Lab (PPT)Worksheet:Blood Typing (PDF) (Includes teacher notes), Need a cheaper version of the Blood Typing Lab?The version listed below uses milk, vinegar, and water instead of the regular simulated blood kits available from the science supply companies.Presentation:"Ernie's Exit"Blood Typing Lab - "Cheap"Version (PPT)Worksheet:Blood Typing Basics - "Cheap"Version (PDF) (Includes teacher notes), Presentation #3:Bloodstain Science (PPT)Worksheet:Bloodstain Science Student Notes &Lab (PDF) &Angle Guide (PDF) (Needed for Part 4 of lab)EDPuzzle: Blood Evidence 2018 (PDF) As the science of BPA progresses, a parallel challenge is to convert its results into new, practical and transparent procedures for murder investigations and courtroom presentations. 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. 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. - Use this lesson listed on the Chemistry Lessons page to investigate white powders. classify the lip prints and identify the one Doc P Chemistry. They use a piece of clear tape to lift the print and tape it to the correct spot on the worksheet. science and arson investigation. Quiz:Unit 1 Quiz (PDF)Other General Resources: Forensic Science Ato ZChallenge (PDF)- Students must use clues to identify forensic science terms and then find them in a "bent word" style word search. The evidence incriminating him involved spots of the victims blood found on a hand-held torch. resource available from the Kids Discover for each section. The DVD is available through You will determine the angle of impact of just 56 spots on the walls. It can also have real effects, according to Alicia Carriquiry at Iowa State University in the US. Angle of Impact -The angle at which a blood droplet strikes a surface. - Students simulate electrophoresis and DNA fingerprinting to solve a crime. Reference Card: Impression Evidence (PDF) - This handout replaces the student worksheet for the introductory presentation and may be used as a guide for the challenges listed below.Questions about the reference cards?See the note at the top of this page. INDIANA STATE POLICE . Bring CSI to life with this best selling activity that connects literacy and, in a fun, engaging way!! QuestionsforReading_BloodStain and Blood Spatter Evidence.pdf View Download . 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 . This topic of inquiry can be a little scary. of forensic anthropologists in crime allergies that may be a concern with your Fluids 1 043201) and blunt-nosed (Phys. Classification Charts Page 17 3. If you need help locating a video file of the episode please simply let me know and I will pull up a, Bloodstain Patterns: Behind the Yellow Line Video Reflection. Blood Spatter Teaching Resources | TPT - TeachersPayTeachers 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! Update 2016: The video is available at. * Files come in 3 formats: Word .docx file, .PDF file, and links to Google Doc versions you can share with your students in Google Classroom.This, pairs with a 43-minute YouTube Video in which, students at Penn State University work together in two separate groups to solve a fictional crime scene. Reference Card: Fingerprint Basics Card (PDF) - This two-sided handout replaces the worksheets for all of the fingerprint lessons.Questions about the reference cards?See the note at the top of this page. This is the result of a drop of blood hitting the surface at an angle of impact, . SupplyCompanies - They are able to practice making and lifting prints and are challenged to match unknown and known in the Fingerprint Challenge. Mark the spots that you are measuring in order to keep track of them. The direction of the long axis shows the direction in which the drop was traveling when it hit the surface. (Courtesy: \u003Cem\u003EData in Brief\u003C\/em\u003E \u003Cstrong\u003E22\u003C\/strong\u003E 269. For three months, we followed three members of the RCMP's, unit, giving you a gritty inside look at a real CSI team. This video is available on YouTube for free. - Visit the "Forensic Kits" area for the Ward's Forensic Detectives Lab that includes an assortment of materials and the FACES software I use for facial composites. Transfer bloodstain c. A bloodstain caused by force 4. . Projectile bloodstain b. She toilet papered my room and the students Blood Spatter Analysis - Medical Dictionary - Point of origin, angle of impact. and see the other resources available. zw The links below are provided to give teachers information about the forensic science supplies I use with my classes. Thanks to Dina Sbarra for sharing her lip - Proficiency Testing Page 25 . (2015, October 1). Unfortunately, widespread adoption of more rigorous BPA practice and training will not come quickly, or automatically erase past deficiencies that produced unreliable evidence and false accusations. Cells that police the body by destroying . I've even found a number of them on YouTube. first slide of the PPT for more details about how I Can be used as a Worksheet, Activity, Mini-Lab, or Homework. Long for sharing this video and worksheet that At the end of the unit, I use four of the tested markers to create a Mystery Pen challenge. purchased sets of bones from 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. 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? ), Presentation:Crime Scene Basics (PPT)Worksheet:Crime Scene Basics Student Notes (PDF), Presentation:Eyewitness Basics (PPT)Worksheets: Eyewitness Basics Student Notes (PDF) It can be 100% digital, and easily used for distance learning. Bloodstain Science Card with Blood Spatter Lab - This two-sided handout replaces the worksheets for the Bloodstain Science . You appear on the scene and you see the blood spatters, but don't know the origin. DOC Glendale Unified School District Good prices and service! Students use overhead markers to add notes to the pages as we discuss each lesson and keep them to review for the unit quizzes. Reproduction of material from this website without written permission is strictly prohibited. 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