In respect of the subject matter, Research is of the opinion that groups are most likely to be productive when they have between 5 to 8 members.
One of the reason for the above is that having limited members between 5 to 8 will give the members enough time to brainstorm and participate or contribute effectively
Another reason was that feed back from members can be gotten as early as possible. Not ambiguous like that of huge members
A topic sentence comes at the beginning of each paragraph and tells what that specific paragraph will be about. A thesis statement usually comes at the end of the first paragraph in an essay and tells what the rest of the paper will be about.