Decide and Defend

Decide and Defend is an instructional routine in which students make sense of another’s line of mathematical reasoning, decide if they agree with that reasoning, then draft an argument defending their decision. The routine fosters math practice 3, construct viable arguments and critique the reasoning of others.

The info-graphic captures the flow of the routine, and resources below will support your implementation of the routine.  The powerpoint slides may be customized for a specific task by inserting images and refining the prompts.  Check back in regularly as we continue to expand and update the tasks section. We hope you will comment on your own experiences with the tasks and share others you’ve used.

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Tasks & Discussion


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