"Very good! Five Points to each of you! Now, the full affects of the Flame Freezing charm is simple. Instead of burning to your death, you just feel a light tickling sensation. For example," She paused casting the charm on the students themselves and created a small fire around them for only a few seconds. It was long enough to get the point.
"Understand? Great. Now. Why show you the actuality of this charm? Well, Wendelin the Weird was caught 47 times, one could only guess why. But Muggles thought that burning said Witch or Wizard would destroy their powers along with them. Only on a rare occasion did they actually catch one." She paused for a couple of moments for those taking notes. "Muggles thought that we would be the death of them, that we were bad news. Some wizards and witches were the death of them. But that is for another lesson. Any Questions so far?" She asked looking around the classroom trying to not seem intimidating.