Contractions, possessives, plurals

When Ashley was out sick last week, the class went over the differences in contractions, possessives and plurals. They sent home a few worksheets, but I wanted to make sure Ashley got the concept since she missed all the classroom discussions. Anyone have any good worksheet links they can give me?

I'm looking for something that would help me to further explain the difference in things like:

They're going to the store
That is their book.

Sally's going to the store
That is Sally's book.

I don't know of anything other than what you've probably already explained, that contractions are parts of two words combined, possessives are used to show who something belongs to, and plurals mean more than one. Like I said, you've probably already used all that though so I'm really no help.

I think she gets it. She did the worksheepts correctly. But, I think that they are confusing to some adults, and I just wanted to give her some extra practice at it. They do a lot of board work and group discussions at school, so the two worksheets that she brought home was just to reinforce what they did at school. Maybe I will just let it be.

I doubt it will be a one time learning concept, Dee Dee. They went over that whole thing again once this year (2nd grade) before they started sentance structure. One of her earlier spelling lists had contractions on it this year as well so they'l reinforce it again, I'm sure.

I google Free worksheets with those words in it and they will come up for you. There are so many places to get free worksheets from on line. I mainly get math worksheets

I agree. Also if she understands then when reading them she probably already has a basis of what they mean and I remember being taught it several times after early grades.

You're right--many adults still can't keep those things straight, and as an English person, it drives me insane! Here's what I tell my kids:

They're going to the store
That is their book.

With regard to distinguishing between there, they're, and their:
"there" generally denotes location. "There is my family" "Put the book over there."
"they're" can be stretched out to it's original form to see if this is the right choice--in other words, if a student writes "That is they're book" ask her to stretch out the contraction--Does "That is they are book" sound right to you? The answer is obviously no, so that leaves the choice of "there" or "their."
"There" denotes location--in this context, are we speaking about location? No again, so the last viable option, is of course "their."

Sally's going to the store
That is Sally's book.
Do the same thing with stretching out the contraction. In the first sentence, does "Sally is going to the store" make sense--yes, so it's a contraction and not a possessive.
In the second sentence, does it sound right to say, "That is Sally is book"--the answer is obviously no, so in this case, it's a possessive.
That's the easiest, and only way I know how to break it down. You might want to check out Thinkfinity.org (I think it's an .org and not a .com, but not totally sure) It's a website teachers use to design lesson plans for every grade and subject. Maybe you can find something there (not their or they're). Let me know how you make out. I can probably dig something up from some of the professional teaching organizations I belong to, if thinkfinity doesn't pan out.