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This application uses a games approach to familiarise the students with the basics of Crime Scene Investigation as taught in BTEC Science Level 2 Extended Certificate Unit 13. In the Crime Scene Training Room is a body lying in a pool of blood. The students must gather the evidence without contaminating the crime scene and take it to the Crime Laboratory. At each stage they are given instructions aurally and written (on in-game plasma TVs) on what they need to know. They start outside the Store Room...
Here they are required to stock up with the tools of the trade. The TV describes what they need and shows them details of the items where necessary. The orange buttons allow them to select the items when they are needed. Once stocked up, the TV directs them to the Locker Room.
Here they are required to don a protection suit. The TV tells them why this is needed and directs them to the Scene of Crime Training Room. Access to the Scene of Crime Training Room will be denied unless the student is wearing the full protective uniform with gloves and boots.
This contains the mock-up of a crime. This is where the students will use the items that they have picked up from the Store Room. For example, they need to obtain a swab of the blood, but it has to be done correctly. They need to place a marker by the blood, take a photograph, use the swab and then label it. The application will give advice when any attempt to collect the evidence incorrectly is made. They are free to go to the Crime Laboratory at any time to see details on the suspects (which may help them find the evidence they need) or to process any of the evidence.
When the student clicks on the microscope, if he/she is in posession of a labelled fibre, the fibre is mounted on a slide and put under the microscope revealing the magnified image of the fibre as shown here. The DNA is analysed by the equipment shown below and outputs a DNA 'fingerprint'.
When the student clicks on the equipment, the swab tip goes into the test-tube and the enzyme is added along with a dye. A sample is then placed in the electrophoresis apparatus which separates out the strands of DNA by their length. The owner of the blood sample is then displayed. The DNA 'fingerprint' is now available for comparison with samples found on the suspects. A computer with a scanner can be used to identify the owners of fingerprints:.
Each time a photograph is taken the image appears on the electronic incident board. As the evidence is processed it is matched against the suspects and the incident board is annotated with the results. The student needs to decide whether the evidence incriminates or exonerates each suspect.