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Which One Doesn’t Belong?

Educators need resources to foster communication, promote reasoning, and provide access to other students ways of thinking. Which One Doesn’t Belong is a routine that allows participants to see that there are lots of viable ways of thinking about a particular mathematics task. This set of collections is inspired by the creators of the “Which One Doesn’t Belong” website and book.

Five Year Old Engages in Which One Doesn't Belong

Which One Doesn't Belong? (Prompts)

Desmos Which One Doesn't Belong? Activities

Inspired by the creators of the Which One Doesn’t Belong? book/website, Jamie Garner and Sarah Cook have embedded the prompts into a collection of Desmos activities.

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