From reading Exercise 10, you should know that a run on sentence occurs when two independent clauses are joined together without any punctuation or conjunction.  You should also know the three simple ways to correct run-ons:
1)  Separate the independent clauses with a period.
2)  Separate the independent clauses with a semi colon.
3)  Join the clauses together by adding a comma and coordinating conjunction (for, and, nor, but, or, yet, so - fanboys).

Examine the following sentences.  In those sentences which contain run-ons indicate where the clauses should be separated with a star (*).  In your notes rewrite the incorrect sentences correctly.

1.  I love math I could solve problems all day!
2.  I want to go to Europe but I don't have the money.
3.  Kelly likes Brian and he likes her.
4.  My dog is so cute she is only one year old.
5.  I stayed for help in History it helped a lot.
6.  She went to Egypt on vacation and bought me a souvenir.
7.  He has her number he's too shy to call.
8.  She's an amazing skier she wins races all the time.
9.  He really likes dancing he can dance to anything.
10. English class is so fun I really like my teacher.

* Note: for more practice with comma splices and run-ons visit the quiz link at the bottom of Exercise 10.