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Argument Detective: The Soundness Lab
Created by Argraide
Updated September 28th, 2026
At a glance
- Play mode
- 📱 Solo
- Format
- 🖼️ 2D
- Length
- ⏱ About 10 minutes
- Subject
- ELA
- Grade
- 7
- Curriculum
- Common Core
- Curriculum code
- RI.7.8
About this activity
Students investigate four school-life editorials: they locate each author's claim, file every supporting sentence as relevant or weak evidence (naming the flaw), and rule on whether the reasoning is sound.
What students learn
- Trace an author's argument and locate the central claim, even when it is not the first sentence
- Judge whether each piece of evidence is relevant to the claim, and name why weak evidence is weak (off-topic, feelings, one story, too few examples)
- Assess whether the reasoning is sound: is the relevant evidence sufficient for the whole claim?
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