English Plus+
English Plus: Commas in Compound Sentences
This grammar tutorial provides rules for the comma to separate independent clauses in a compound sentence.
Get It Write
Get It Write: When to Use a Comma Before "And"
Follow the clear instructions in this article to make sure that you use a comma before "and" correctly. The page includes a self-test with answers.
Robin L. Simmons
Grammar Bytes: Exercise 1: Comma Splices and Fused Sentences Game
An interactive location/game that focuses on key elements of writing such as commas and their relationship with fused sentences.
Grammarly
Grammarly Blog: Run on Sentences
Rules and examples for using commas when writing a complex sentence.
Grammarly
Grammarly Blog: Unnecessary Comma in a Complex Sentence
Rules and examples for using commas when writing a complex sentence.
Khan Academy
Khan Academy: Commas in Dialogue, Tag Ques, Direct Address & Yes or No Responses
Find and use commas to set off dialogue, in tag questions, for direct address, and for yes-and-no responses.
Grammar Tips
Commas With Compound Sentences
This clearly worded guide clearly explains how to use commas in compound sentences.
Sophia Learning
Sophia: Commas: Coordinating Conjunctions & Conjunctive Adverbs
This lesson introduces how to use commas with coordinating clauses and conjunctive adverbs.