Fake! Activity 1: What was the crime? Year 7 Upgrade A teaching sequence from the Forensics unit of upd8 wikid Year 7 Upgrade 1

7E Learning Cycle Billie starts work with the forensic team, is assigned to a case and views the crime scene. Was the painting tampered with? Students consider how latent fingerprints on the frame can be shown Students explain how particles were used to show up the fingerprints Students are shown how iodine can be used to show fingerprints Students try out using different substances to show up latent fingerprints Students learn about particles and changes of state 2 © Association for Science Education and Centre for Science Education 2010 This page may have been changed from the original 2

Objectives: Recall how the particles are arranged in solids, liquids and gases. Use particles to explain a process. Activity 1: What was the crime? 3

Engage Elicit Explore Explain Elaborate Extend Evaluate Hello, and welcome to your forensic science work placement. I’m Dr Sherl, your mentor. You must be Billie, right? Yes, that’s me. I can’t wait to get started! I’ve seen lots of forensics on TV, but this is the real thing… I’ve paired you up with Dragon, our other trainee. Do you know what forensic scientists do? 4 Activity 1: What was the crime?

Engage Elicit Explore Explain Elaborate Extend Evaluate A crime always leaves traces. Don’t forensic scientists use special techniques and try to find evidence to pin the suspect to the crime scene? Absolutely right Billie! I hope you’re ready to start, because I’ve just received news of a major crime. 5 Activity 1: What was the crime?

Engage Elicit Explore Explain Elaborate Extend Evaluate It happened at an art gallery and it reminds me of a film. Watch this clip – it might give you some ideas. 6 Activity 1: What was the crime? 6

Police are reporting a strange break-in at a local art gallery. Engage Elicit Explore Explain Elaborate Extend Evaluate It happened at an art gallery… the newspapers are starting to report the story. Police are reporting a strange break-in at a local art gallery. A rare and priceless painting seems to have been the target but the criminals may have escaped empty-handed; reports say the painting is still hanging in the gallery. A local police officer has told us that the case is being investigated by forensic scientists who are looking for clues to investigate. This slide is an alternative to the Thomas Crown affair movie trailer. 7 Activity 1: What was the crime?

Engage Elicit Explore Explain Elaborate Extend Evaluate One of the rooms with a priceless 17th-century painting looks like it’s been broken into. There’s not much evidence so far – just a statement from the duty guard. You might find the crime scene drawing useful, too. Slide numbers need checking from here Here, take a look. 8 Activity 1: What was the crime?

Activity 1: What was the crime? Engage Elicit Explore Explain Elaborate Extend Evaluate SS1 9 Activity 1: What was the crime?

Activity 1: What was the crime? Engage Elicit Explore Explain Elaborate Extend Evaluate SS2 Hazards if lab is set up as a crime scene 10 Activity 1: What was the crime? This page may have been changed from the original

So Billie, how can we find out what happened? Engage Elicit Explore Explain Elaborate Extend Evaluate So Billie, how can we find out what happened? 11 Activity 1: What was the crime?

Engage Elicit Explore Explain Elaborate Extend Evaluate We have to figure out what the crime was. It must be something to do with the painting – but it looks fine! Yes – but it might have been tampered with. Maybe we should check if it has been touched. How can we do this? 12 Activity 1: What was the crime?

OK. But how can we find them? Engage Elicit Explore Explain Elaborate Extend Evaluate Just look for fingerprints, Billie. It’s easy – his fingerprints will be all over the frame! OK. But how can we find them? 13 Activity 1: What was the crime?

Engage Elicit Explore Explain Elaborate Extend Evaluate Whenever you touch a surface, you leave traces of oil from the ridges on your fingertips. These hidden fingerprints show up if you brush charcoal dust onto the prints. The charcoal sticks to the oil. 14 Activity 1: What was the crime?