This versatile activity offers multiple formats to engage students in critical thinking about mathematical claims:

1. Individual Activity:

Students analyze each task card and type two arguments: one to support and one to counter the claim.

• Optional: Students can share their arguments with classmates or the teacher for discussion.

2. Partner Activity:

Partners split the deck of 20 task cards (10 cards each).

• Partner A reads the claim aloud, and Partner B provides and writes the first argument. Partner A then counters or supports Partner B’s argument.
• Roles switch for each card until all claims are discussed.
• Optional: Review answers as a pair or discuss findings with the class.

3. Group Activity:

Group split the deck of 20 task cards (5-7 cards each).

• Groups of 3–4 evaluate claims collaboratively.
• Roles (Reader, Explainer, Writer) rotate for each task card to ensure active participation.
• Groups decide if the claim is true, false, or situational, providing examples or counterexamples to justify their reasoning.
• Optional: Groups share interesting findings or disagreements in a class discussion.