What is an argumentative essay topic on "students learn more from computers"?

You are either asking someone to give you ideas on what to write on such an essay, or simply do not know what the words “argumentative essay” means.

It is your assignment to write.

Think about the topic, although I suspect it was more complete than just “students learn more from computers”. Learn more than what? Learn more from computers than books? That just means reading on a screen rather than reading on a page. Surely that is not what was meant. So first, examine the prompt. Then see if you agree or disagree with the prompt statement or question. Whichever you do, see if you can find examples - in your own learning, for example, or in some article in the literature on how students learn - that either supports the prompt statement or refutes it or if the prompt is a question, answers it.

Then like in any essay on any topic, once you have studied the issue you are writing about, and have formed your opinions, outline a coherent argument that supporting your conclusion. Once you are comfortable with that - and we usually can see the logic better after we have written it down - construct your essay.