Sentence Combining:

Fix 50% of Your Grammar Problems
(a good general guide to punctuation when combining sentences)

Sentence Combining (join Ms. Susan Eller's class as they discuss adding variety to sentence structure)

Fused Sentences, Comma Splices, Paragraphing
(interactive)

Sentence Construction Exercise (comma splices, run-ons, fragments)

Improve Your Vocabulary:

Vocabulary Crossword
(interactive)

Making Subjects and Verbs Agree (join Ms. Nancy Spiller's class as they discuss subject-verb agreement)

Elections (interactive exercise)

Tech Parking (interactive exercise)

Homonyms:

Fun with Homonyms 1
(interactive exercise)

Fun with Homonyms 2
(interactive exercise)

Fun with Homonyms 3
(interactive exercise)

Fun with Homonyms 4
(interactive exercise)

"Jessica's Buffalos": Using Conjunctions
(interactive exercise starring Jessica Simpson)

Shifts in Voice and Tense
(interactive)

Misplaced and Dangling Modifiers

Parallel Case
(interactive)

Make It Parallel! (interactive)

Name that Grammar Error! (interactive)

Name that Part of Speech! (interactive)

Pronoun-Antecedent Agreement Practice
(interactive)

Common Usage Quiz  (by Ms. Tammara Mitchell)

Pronoun Usage Quiz (by Ms. Sarah Smith)

Random Grammar 1 (by Ms. Sarah Youngblood)

Random Grammar 2 (by Ms. Emily Zuber)

Parts of Speech (by Ms. Emily Howell)

Verb, Adverb, and Conjunction Challenge (by Mr. Oro Olson)

Spelling Exercises:

Spelling Exercises: "ent" or "ant"? (interactive)

Spelling Exercises: "ie" or "ei"? (by Ms. Marcia Street)

Spelling Exercises: Misspelled Words (interactive)

Spelling Exercises: Which Word is Right? (interactive)

Spelling Exercises: Find the Misspelled Word (interactive)

Spelling Exercises: Find the Misspelled Word 2 (interactive)

Spelling Challenge
(by Mr. Bruce Herman)

Punctuation:

Comma Rules (interactive)

Do I Really Need a Comma? (interactive)

Punctuation Review (interactive)

 Word Choice Exercises:

Lay and lie (interactive)

Sit and set (interactive)

Commonly Confused Words 1 (interactive)

Commonly Confused Words 2 (interactive)

Commonly Confused Words 3 (interactive)

Commonly Confused Words 4 (interactive)

Commonly Confused Words 5 (interactive)

Modifiers (interactive)