Do you want them to read aloud or silently? Let's read the poem aloud together. Let's read the poem silently together.

what is the english word for it (i want the students to read the poem together)??? Do you mean "i want the students to read the poem ALOUD together"? If that's what you meant, you've expressed it in English already

i no not knwo there is a word could mean this action. just say:everyone, let's read the poem together, start. that's ok.

Could you repeat your question a different way? I do not understand it.