Khan Academy
Khan Academy: Writing: Within Sentence Punctuation Harder Example 1
In this video [2:16] watch Dave and David work through a harder within-sentence punctuation question from the SAT Writing and Language Test.
Khan Academy
Khan Academy: Writing: Within Sentence Punctuation Harder Example 2
In this video [2:04] watch Sal work through another harder within-sentence punctuation question from the SAT Writing and Language Test.
Khan Academy
Khan Academy: Run Ons and Comma Splices
A run-on sentence doesn't separate any of its independent clauses with the punctuation that it needs, and a comma splice incorrectly separates two independent clauses with a comma, instead of a comma-and-coordinating-conjunction.
Khan Academy
Khan Academy: Punctuating a List
Learn how to use commas to punctuate a written list of people, things, actions, or events.
Khan Academy
Khan Academy: Introduction to the Semicolon
Paige introduces a piece of punctuation called the semicolon; this punctuation can link closely related independent clauses together in a sentence.