Over the last couple of weeks we have been conducting a science experiment to test the 5 second rule and if food we drop on the floor is it really safe to eat?  We observed any changes that had happened to the food after one week and again after two weeks. Here are some pictures of the cheese we dropped on the floor can you spot the difference?

 

 

 

 

 

 

 

 

 

We dropped food on the classroom carpet, the playground floor and the girls toilets on the Key Stage 2 corridor.  Can you guess which food had the least bacteria growing on them?  Have a look at the pictures below for some clues.

 

 

The chocolate didn’t have any bacteria growing on it.  It didn’t matter if it was the control sample or which floor it had been dropped on.  We will look more about why this is next week!

Come and talk to Y3 to ask why the food dropped on the toilet floor had the least amount of bacteria growing on it.