Research

84 Practice Questions From a Free Harvard Course: Claude Code Turned the CS50 Transcript Into a Self-Quiz That Strikes Through What He's Mastered

  • Level Beginner
  • Setup~30 min (estimated)
  • Evidence Some evidence
  • CostNot stated in source
  • No-codeNo
Claude CodeSource-linkedBeginner-friendly

What they did

An oncologist finished Harvard's free CS50 course on edX and wanted to practice, not just watch. He pasted the free course transcript into Claude Code and asked for an HTML page of questions that test his understanding. When he answers a question, the part of the transcript it covers gets struck through. A few minutes later he had 84 practice questions.

How it went

X post by the learner (Oct 26, 2026 UTC) with a screenshot of one question: CS50 transcript into Claude Code, HTML quiz, transcript sections struck through as answered, 84 practice questions in a few minutes

Worth knowing

  • X post by the learner (Oct 26, 2026 UTC) with a screenshot of one question: CS50 transcript into Claude Code, HTML quiz, transcript sections struck through as answered, 84 practice questions in a few minutes.

Prompt

Cleaned version rewritten from the source — not a direct quote.

Here is the transcript of a course I just finished: [paste transcript]. Build a single HTML file I can open in my browser with practice questions that test real understanding, not trivia. Cover every section of the transcript. Show the transcript next to the questions, and when I answer a question correctly, strike through the part of the transcript it covers so I can see what I still haven't mastered. Explain the right answer when I get one wrong.

Recommended

Try it in Grok Bot

  1. Copy the prompt (button below).
  2. Open Grok Bot chat and paste it. Replace any [bracketed] placeholders.
  3. Connect the listed tools (Browser) as connectors when Grok Bot asks.
  4. If the task repeats, ask: "Make this a daily routine."

Alternatives: the same prompt works in Claude Code, Claude, ChatGPT Agent, OpenClaw.

Set it up

Tools: Browser · Stack: Claude Code

  1. Read the original source for full context.
  2. Connect the tools your agent needs.
  3. Paste the prompt and replace [bracketed] placeholders.
  4. Run once manually and check the output before scheduling it.

Generic suggested steps, not from the source.

Evidence

X post by the learner (Oct 26, 2026 UTC) with a screenshot of one question: CS50 transcript into Claude Code, HTML quiz, transcript sections struck through as answered, 84 practice questions in a few minutes

Source: X · 2026-10-26 · Verified by us: not yet · Report broken or outdated

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