Could you please help me with this question？

[Unregistered]

Is this sentence correct?

How does a small child do? Thank you!

[Raymott]

Is this sentence correct?

How does a small child do? Thank you!

No, it's not right. What do you think it means?

[Harry12345]

Thank you very much for your answer！

I am just a English bignner. My teacher asked me to correct this sentence. But I don't know where is wrong and how to correct.

Can I correct it like this: What does a small child do? Thank you very much!

[bhagona]

had it been "how does a child do that"than it would have been right sentence otherwise "what does......do" is also right.

[draft2raghu]

had it been "how does a child do that"than it would have been right sentence otherwise "what does......do" is also right.

Teacher: "what does ... do that" is incorrect.

If you've heard something that a child can do and would like to know how it does that, then you ask "how does a child do that?"

"what does a child do?" means you want to know what it does.

[Raymott]

Thank you very much for your answer！

I am just a English bignner. My teacher asked me to correct this sentence. But I don't know where is wrong and how to correct.

Can I correct it like this: What does a small child do? Thank you very much!

Yes, that's a correct sentence.
But I wouldn't call that a correction of the sentence since it means a completely different thing. It's been changed to a different question. But that's the probably the answer.