Ella tried her best to follow along while Professor Elwood explained how the circle would be broken up. She copied down notes as the explanation continued, stopping now and then to reread what she had written. Apparently reading stones was a little more complicated than the second year had originally thought...

Okay, so clusters were stones that fell closely together. That was understandable. She could totally grasp that concept. But what were pointers? Ella had seen her muggle teachers use pointers in elementary school. They were wooden sticks used to point to information on the board. Perhaps pointers in this scenario meant stones that lead to a certain cluster. "Professor, are pointers the stones that fall and lead towards a cluster?" Seemed legit to Ella!