An investigation into the best way to wash hands to reduce the risk of food poisoning. Hands washed thoroughly with soap have a significantly reduced number of bacteria. Every year up to four and a half million people in the UK suffer with food poisoning caused by unseen microbes. The number of microbes can be reduced by washing hands but is this enough in the food industry? Does it matter how you wash your hands? These questions are explored through some fair tests. At the start of the test the bacteria or microbes are invisible. Twenty four hours later it is possible to see the bacteria on the incubated test plates. The testing proves there is a significant difference between the number of bacteria carried on quickly washed hands and the number carried on thoroughly washed hands.
This clip can be used to share scientific evidence about the importance of washing hands to prevent to spread of bacteria. This could be useful in a topic on cooking or microorganisms. Once the clip has been viewed, children could be given the task of creating a presentation for the rest of the school which shares the key scientific facts about the importance of washing hands during food preparation. The presentation could either be an assembly or small groups of children presenting to individual classes.