Similar to compare and contrast.

Helps students identify properties and characteristics.

Teacher starts by asking students to find a reason why one of the quadrants doesn’t belong. After a short time, ask students to find as many reasons as they can, why each of the options doesn’t belong.

**Which one doesn’t belong?**

And, another. When designing WODB activities, don’t forget to use multiple representations and even empty cards.

**How might we process this activity?**

Whole class discussion:

- Poll for answers, then discuss, highlight concepts you have been looking at. Are there any new ideas?
- Ask groups to explain how they can arrive at a particular list item (so everyone understands concepts you want to highlight.) E.g. Define what an intercept is. How can you find them in a graph? In an equation?
- Can you find any errors or inconsistencies in the list?

Or, could do poster or swap meet…

In a gallery walk: What was the same as yours? What was different? Do you agree or disagree and why. Questions/Concerns?

Debrief

- How might this be useful?
- Can everyone participate?
- When would it be helpful?

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