Every colourful page of Which One Doesn't Belong?'s 36 pages contains a thoughtfully designed set of four shapes. Each of the shapes can be a correct answer to the question "Which one doesn't belong?" Because all answers are right answers, students shift their focus to justifications and arguments based on the shapes' geometric properties. The companion 84-page teacher's guide shows how to facilitate rich discussion and teach mathematical argumentation, whil listening to students' ideas. This powerful bundle provides flexible resources teachers can use to provoke lively discussion and deep learning with students of all ages.

Also available to order:
Single student hardcover
Student paperback (set of 5)