Lots of plants use the wind to help them with seed dispersal. Today we talked about sycamore seeds and made 'helicopters' to investigate this method of seed dispersal. 
We did some flight testing and measured the distance the helicopters flew then made some modifications to see if they could fly any further. We also talked about the height from which these seeds often fall and how this too helps with the distance they travel.Look at the dandelion seeds on this flower head. There are so many of them!
