UV rays

I am going to tell you something about our classes UV ray bracelets...
Our class has bean making these UV rays bracelets
UV rays is this type of thing that comes from the sun & you can get really sunburnt
And it can cause bad skin cancer so that's why our teacher bought some string & these expensive beads for our UV rays bracelets, we had to finger knit our bracelets then put our beads on.
When you go outside under the sun it will change to a colour like rainbow colours but we only got 3 beads that we slid on my one is orange purple orange it always comes the same colours.
And that's a UV rays that our class has learnt!