I have shown that everybody matters by making sure that anyone can join in with games at playtime. When my friend had no one to play with at lunchtime, I made sure I played with her, so she felt included.

Year 4 Child
 

Everybody Matters means that everyone is equal, people get treated the same. If they're your friend, you help them, but if they're not your friend, you still help them. 

Year 1 Child

I showed that Everybody Matters when we were playing duck-duck-goose and when someone fell over, I helped them. 

Year 6 Child