There is an existing suggestion from 6 years ago to add this feature in all subject areas:
https://khanacademy.zendesk.com/hc/en-us/community/posts/201310134-Introduce-Answered-Unanswered-All-for-all-community-questions

Hi Janice,

Thanks for sharing this! I completely agree that this would be a really useful feature to have on the discussion pages (for all subjects), since it is currently rather difficult to answer the unanswered questions when the page is so cluttered with questions that have already been answered.

I've forwarded this to the team so they can take a look at this request and consider adding it to our development timeline. At this time, I'm afraid I don't know whether or not this will actually be a possibility, but it is definitely something that's on our radar!

Best,

Evan

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