Surveying the classroom, I see that most of the students have lost interest. Chatter and giggling is as contagious as letumosis. Textbooks have been stowed in bags. Papers and cloaks are strewn across desks as everyone gestures and gossips. Sherlock, John, Lara, and Phil remain the few students with their noses still stuck diligently in their books.

"Claude," I begin sharply, adjusting my glasses on my nose.  He glares at me coolly, reminding me distinctly of Draco Malfoy. "Show me the proper wand motion for trig."

He simply shrugs and dives back into his conversation with Alois, who's blue eyes are sparkling with mischief.

"Okay, then, how about... Winter?"

Her head snap around, sending her dark curls flying. Her face is glowing with happiness and her caramel eyes look particularly joyous. Amongst a fit of incoherent giggles, she trills,"Bippity boppity boo!"

Her hand, daintily gripping her wand, sweeps whimsically through the air.

"Alright, Phil, you show us," I sigh, finally acknowledging Phil, who's hand has been flapping in the air incessantly. He stands up, beaming with pride. Murmuring beneath his breath, he flick his wrist in the shape of a right triangle and a series of decimal places appear on the blackboard. 

"Nice job, Phil," I tell him enthusiastically. "Top marks!"

He tucks his thick black fringe behind his ear with a blush as he reseats himself.

I turn to address the class:"What Phil has just used is the Tangent spell. It represents the formula of the-- erm-- legs of the triangle over each other, or something of that nature. It doesn't really matter, as long as you know the spell."

Cinder glances up, balking. "But, Professer Potter, you can't say that math isn't important!" Behind her, the shy Cress looks inclined to agree. 

"Oh, it is. But we have spells to make it easier. Now," I change the subject by pushing the Sorting Hat in front of me," what do we do if we have an isosceles triangle?"

"You cut it in half!" Grell  transform some his wand into a gigantic red chainsaw and leaps toward the hat.