A simple activity to help children understand how water travels up the stem to feed it. It also encourage patience and delayed gratification as the process can take up a couple of days, although lots of times it can only take an hour.
For this you will need:
Clear cups or glasses
Put some warm water into a clear cup with plenty of food colouring.
Pop your flowers into the water and leave them to absorb it. You will see it happen as quickly as an hour.