"2s please read it aloud together"

I have not ran into this issue yet, but now that I am in fourth grade I'm seeing a lot of "book" work. Their math book, directions, shared reading, etc. My current teacher will ask the students to read things aloud as a group. For example, she'll ask to have all the NUMBER 2 read simultaneously the following paragraphs. It looks similar to round robin reading... only it's a little worse because there are usually 5/6 people talking at the same time. This way obviously works for her, but I'm thinking I know I don't like round robin reading... how am I going to have students read during shared reading, etc.