Dross is the impurity that appears in silver when it is heated. Removing dross is what allows beauty and usefulness to emerge. This is a picture of purification — the process of removing what corrupts so that the true, valuable thing can shine.
Memory phrase: Remove the bad. See the good.
Talk about it: What happens when you clean something that was very dirty or impure?
Prayer: God, take away what is bad in me. Make me something beautiful.