Year 5 Science - Forensic Investigation

Year 5 students recently used their powers of deduction after collecting evidence from a crime scene in Mr Burgess’ room. Mystery Powders were left at the crime scene and the students had to independently test the samples using their knowledge of testing known powders during the term. If you ask the students what colour flour turns in iodine, they will tell you “Black!” They know that salt and sugar crystals dissolve “clear” in water, faster in hot water or when stirred. They of course know that vinegar reacts with bicarb of soda to create bubbles of gas, a sure indicator! Everyone loved the wonder of looking at Epsom salt crystals (and other powders) under the 3D stereo microscopes.

After writing a scientific report recording their observations, the students filed a newspaper report in English, proclaiming the culprits of the crime. If you have a young forensic scientist in your home, ask them for an explanation of their findings! For their last lesson, groups of students planned a crime scene and prepared evidence of fingerprints and tool impressions for each other to inspect. Most crime scenes were solved, showing that these young sleuths have learnt how to identify and match circumstantial evidence.

It has been a really enjoyable end to the year in Science.

Deb Singleton
Science Teacher


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