Yes. It should be children's hats.
It depends on whether it is one student (singular) or more than one student (plural).Singular possession:The student's hats.Plural possession:The students' hats.
You listen to your children's opinions.
I am does not need an apostrophe. It is only when you make it into a contraction by dropping the a that you need the apostrophe. It becomes I'm in that situation.
No. The Cannons doesn't need an apostrophe.
No, Christmas Eve does not need an apostrophe.
No, because plurals do not need an apostrophe.
The show was called Lidsville. Producers were Sid and Marty Krofft.
The names belong to the women. So yes, women needs an apostrophe s.The women's hats were beautiful.The men's bathrooms were out of order.Notice how these collective nouns are plural so they need verbs for plural sentence structures.
As a plural, for more than one dad; no, does not need an apostrophe. As a possessive, as in the item belonging to dad, then yes, it does need an apostrophe.
Men is already plural so it would be men's room, hats, clothes, etc.
No. Harringtons doesn't need an apostrophe.
The plural "Thursdays" doesn't need an apostrophe.