Unfortunately, Miss Needham's umbrella has got a hole in it! Luckily, the children in Delius were on hand (as always) to offer a helping hand. We decided to conduct a science experiment to work out which material would be best for fixing the hole in the umbrella. We used a plastic wallet,  polyester and a duster. We discovered that lots of our coats were made from 100% polyester, and they kept us dry, so this would be the best material to use when fixing the umbrella. Thank you for your help, Delius!