Decide & Defend WHAT: Interpret mathematical claim, decide if you agree or disagree, draft, and defend your decision. WHY: To build the mathematical habits of interpreting, deciding and defending (i. e. , to think and work like mathematicians)

Decide & Defend Interpret the Claim Decide Draft Defend Reflect on Learning

Interpret the Claim Think – Pair - Share

What is the question Lee is answering? What claim is Lee making? Compare the numbers ⅔ and ⅖. Lee said that 2/3 is equal to 2/5.

I think Lee … What do you think? Compare the numbers ⅔ and ⅖. Lee said that 2/3 is equal to 2/5.

Lee thinks. . . Lee knows… Compare the numbers ⅔ and ⅖. Lee said that 2/3 is equal to 2/5.

Decide if the Claim is Correct Does Lee’s claim make sense? What would Lee have to show or say to convince me his claim made sense?

Draft your Defense • Prepare what you’ll show • Prepare what you’ll say

Defend your Decision Defender We decided Lee’s claim is correct/incorrect because… We’re still not sure about…. Skeptic I agree/disagree with your defense because… A question I have is…

Reflect on learning § Next time I consider someone else’s claim, I will… (ask myself, pay attention to, ) § In order to convince a skeptic, it’s important to …. § A new math idea I learned is…