Apostrophes can be confusing! All it takes is a few simples rules, however, to get on track.

Check out this site first to understand the rules.

Now work on these, and see if they make sense. Check with someone to see if you have the correct answers. You can download the .pdf file .
Answer key for the above worksheet:
Finally, take an online quiz to see how well you're doing. **NOTE!! The final example right before the end quiz has an INCORRECT apostrophe! Be aware!!!