Book excerpt: The Mysterious I.D. Vide in Newton's Nemesis is a graphic novel designed to help children learn about fractions and fraction division. The engaging math mystery features diverse, relatable children who struggle with fractions, and yet, they must solve a problem posed by a mysterious old woman, Ms. I. D. Vide. Our story begins when Theo gets a new job watching a small puppy named Newton, who unfortunately lives next door to a creepy old house at the end of Pentagon Court. Before long, Theo and his friends discover the crazy old woman who lives there needs a dog bone for a spell, and the race to save Newton begins. Written by a former teacher and professor of mathematics education, the story's underlying narrative reassures students that making mistakes is a normal part of learning. Mistakes do not mean you are bad at math. When you solve a hard problem, it can feel great! As one character in the story explains, trying difficult problems are just like playing against great teams in sports, "If you are playing an easy team, winning is boring. If you play a hard team and win, that's fun!" The captivating images in the graphic novel are ideal for struggling readers and students learning to speak English, providing ample opportunities to differentiate classroom instruction and generate rich discussions. Activities are embedded in the book and free lessons are available at www.MathComicHero.com to help teachers launch explorations of the different meanings of fractions and division. Topics include measurement and equal sharing models of division, linear and circle models of fractions, division with unit fractions, and using the common denominator method to solve fractions division.