How to Write a Prompt That Gets You a Useful Answer
When people say AI wasn’t much help with their coursework, the transcript usually shows a one-line question and a generic answer. The model produced exactly what was asked for. What was asked for was vague.
You do not need tricks or magic phrases. You need to supply the context a human tutor would already have.
Four things worth including
Where you are starting from
“Explain Bayes’ theorem” gets you the Wikipedia-shaped answer. “I understand conditional probability but I keep losing track of what the denominator represents” gets you the paragraph you actually needed.
Saying what you already understand is not modesty. It is the single most useful piece of information you can provide, because it tells the model which explanation to skip.
What it is for
An answer aimed at a seminar discussion looks nothing like one aimed at a three-mark exam question or a 2,000-word essay. Say which. “I need to be able to explain this out loud in a tutorial tomorrow” produces a genuinely different — and more useful — response than the same question with no destination attached.
Your actual material
Paste in the lecture notes, the essay question as written, the slide, the paragraph you are stuck on. Your course has particular terminology, a particular emphasis and a particular examiner. A generic answer about the topic matches none of them.
This also makes the answer far easier to check, because you can see what it was working from.
The shape you want back
Ask for what you want: a comparison table, five bullet points, a worked example with the steps shown, an explanation with no jargon. Left unspecified, you get four paragraphs of prose whether or not prose is the right format.
The instruction that improves almost everything
Add this, more or less verbatim:
If anything in my question is ambiguous, ask me before answering. If you are not confident about a specific fact, say so rather than guessing.
Two things happen. You stop receiving confident answers to questions you did not mean to ask. And you get a rough signal about which parts of the response are shakier — not a guarantee, but better than the uniform confidence you get by default.
Treat it as a conversation
The biggest single improvement most people can make is to stop treating the first answer as the answer.
“That’s too abstract, give me a concrete example.” “You’ve assumed I know what a partial derivative is — I don’t.” “Now explain why the other approach doesn’t work.” Each of these takes seconds and moves you closer to the thing you were actually trying to understand.
A tutor who gave you one paragraph and then left the room would not be much of a tutor. Don’t use one that way.
Two prompts worth keeping
For understanding: “Explain X. I already understand A and B, but I’m stuck on C. I need to explain this in a tutorial tomorrow. After explaining, ask me two questions to check whether I’ve actually got it.”
For your own writing: “Here is my argument. Don’t rewrite it. Tell me which claim is weakest, what a hostile marker would attack first, and which paragraph is doing the least work.”
Both keep you doing the thinking, which is the point.