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Finger printing

Finger printing. Identify the different ways which evidence can be analysed from a crime scene. Explain how to analyse evidence taken from a crime scene. Be able to solve a crime by analysing crime scene evidence. . Learning Objectives. Bellwork. What pieces of evidence could you

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Finger printing

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  1. Finger printing

  2. Identify the different ways which evidence can be analysed from a crime scene. Explain how to analyse evidence taken from a crime scene. Be able to solve a crime by analysing crime scene evidence. Learning Objectives

  3. Bellwork What pieces of evidence could you collect from the crime scene?

  4. New Information • There are many different ways of collecting evidence from a crime scene: • Blood samples • Finger printing • Hair and fibre samples • Entomology – insects • DNA • Trace evidence – very small amounts • Look at the information sheets given to you. How would you carry out each of these tests? • Complete the table to achieve 13P3

  5. 13P3 Part 1

  6. Activity 13P3 Part 2 For each of the different types of the evidence that you could collect, match up the sample type to its description. Complete the sheet to achieve 13P3

  7. Record your fingerprints in the grid Can you see any patterns? Describe the shapes you can see underneath your prints. Classifying Fingerprints

  8. There are three main fingerprint types Which types did you find? Arch Whorl Loop Fingerprints

  9. CSI – Demonstrate At 3am this morning residents of Cramlington were awoken by the sound of a gunshot. When police officers arrived at the scene they found the body of Christina Green. A gun was found in a residents garden, a partial fingerprint was found. We have 4 suspects, and their fingerprints. It is your job to match up the partial fingerprint to the full fingerprint by looking at the different features of the fingerprints. Demonstrate - CSI

  10. Who Dunnit? Suspect 2 Suspect 1 Suspect 3 Suspect 4

  11. Evidence (partial finger print) • Using the partial finger print collected at the scene of the crime, work out who was at the scene of the crime. • What features can you pick out?

  12. Coursework – 13P3 Part 3 As part of your training programme you need to produce a poster of how you will analyse the collected evidence. Identify the evidence that has been collected, and indicate whether each piece of evidence is either; biological, chemical or physical. You must include a flow diagram which explains how to collect this data without contamination. Use this information to produce your poster. • Include: • A plan which will detail how you carry out the practical safely include: • The type of evidence (finger print) • The procedure you will use • The equipment you will need • The observations you will look for • How will you record your result? • Also include: • 1. The 6 types of evidence and why they are used. • 2. The process of analysing finger prints – what do you look for and why? • 3. What are the negative points about finger print evidence?

  13. Review • What are the three different finger print shapes called? • How do you collect a finger print without contaminating the evidence? • 3. Name three different types of evidence you could collect from a crime scene. • 4. Why is DNA evidence such a strong piece of evidence to have?

  14. Coursework – 13M2 As part of the training programme, forensic scientists have to make notes about how to record observations and measurements during investigations. You must produce a log which clearly states how to record these observations and specify how long each observation will take. Include: 1. The 6 types of evidence and why they are used. 2. The process of analysing finger prints – what do you look for and why? 3. What are the negative points about finger print evidence?

  15. Coursework – 13D2 As a senior forensic scientist you should complete risk assessment sheets for the analysis of all the evidence you have collected as good practice. Make sure you consider the risks from the evidence itself, any chemicals or materials used and techniques or processes. Include: 1. The 6 types of evidence and why they are used. 2. The process of analysing finger prints – what do you look for and why? 3. What are the negative points about finger print evidence?

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