Appearances

"Bonnie Pinkwater is a teacher who rules!  The Witch of Agnesi will appeal to everyone who has - or ever had - a cool teacher, a high school rival, or an interest in math.  It's the Magic School meets Numbers from the moment Peyton Newlin goes missing to the ultimate climax, and keeps you reading under the covers with a flashlight all the way to the grand finale.  It's a great read."  
Christine Goff, Author of Death Shoots a Birdie