Keep the record honest
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A careful question, a better source, or a clear explanation of where a lesson loses you can make this classroom stronger.
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Use email for source corrections, a stronger objection, a teaching suggestion, or an accessibility concern.
Correct the record
Include the page, the exact claim, and the strongest primary source you know.
Improve a lesson
Tell us where an explanation became unclear, too fast, or more technical than it needed to be.
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Let us know about captions, transcripts, keyboard use, contrast, or another barrier to learning.
What helps most
A link, a quotation, a timestamp, or a reproducible observation is more useful than a general impression. We welcome disagreement; the goal is to make the evidence trail easier to inspect, not to make every visitor agree.
If you are new to the site, start with the method and confidence tiers. They explain how a claim can move as better evidence arrives.