Hello I am a PGCE student in a year 2 class. I need to do an assignment based around a science activity with 4 children, lasting around 20 minutes. The focus is on learning through experiment and investigation. The class have been learning about why we need food and exercise, and I don't think it would be right to deviate from this for the sake of my assignment. However, I am drawing a blank as to what activity I can do within this area that is sufficiently creative and investigative to meet the criteria of the assignment! I would really appreciate any ideas! Thanks.