We celebrated British Science Week with a special assembly then an enquiry question to investigate linked to the theme of time.  Our question was, 'Which biscuit is best for dunking.' We talked about what this meant and how we would test this.  The children thought about how to make the tests fair and how we would use 'time' in our tests. They made predictions explaining what they thought would happen and why. 
We found out that shortbread was the best biscuit out of the ones tested.