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Unit: Punctuation: the comma and the apostrophe

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Introduction to commas

Learn
Three ways to end a sentence
(Opens a modal)
Meet the Comma
(Opens a modal)
Punctuating a list
(Opens a modal)
Practice
Three ways to end a sentenceGet 3 of 4 questions to level up!
Meet the commaGet 3 of 4 questions to level up!
Punctuating listsGet 3 of 4 questions to level up!

Commas in space and time

Learn
Salutations and valedictions
(Opens a modal)
Commas in space and time
(Opens a modal)
Commas and introductory elements
(Opens a modal)
Practice
Salutations, valedictions, dates, and addressesGet 3 of 4 questions to level up!
Commas and introductory elementsGet 3 of 4 questions to level up!

More ways to use commas

Learn
More uses for commas
(Opens a modal)
Commas in dialogue
(Opens a modal)
Appositives
(Opens a modal)
BONUS: The Oxford comma
(Opens a modal)
Practice
Commas in dialogue, tag questions, direct address, and yes-or-no responsesGet 3 of 4 questions to level up!
AppositivesGet 3 of 4 questions to level up!

Quiz

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Apostrophes and contractions

Learn
Introduction to the apostrophe
(Opens a modal)
Introduction to contractions
(Opens a modal)
Apostrophes and plurals
(Opens a modal)
Practice
Meet the apostropheGet 3 of 4 questions to level up!
Introduction to contractionsGet 3 of 4 questions to level up!
Apostrophes and pluralsGet 3 of 4 questions to level up!

Introduction to the possessive

Learn
Introduction to the possessive
(Opens a modal)
Possession for words ending in “s”
(Opens a modal)
Advanced (plural) possession
(Opens a modal)
Practice
Introduction to the possessiveGet 3 of 4 questions to level up!
Advanced (plural) possessionGet 3 of 4 questions to level up!

Its vs. it's

Learn
Choosing between its and it’s
(Opens a modal)
BONUS: History of the apostrophe
(Opens a modal)
BONUS: History of the possessive apostrophe
(Opens a modal)
Practice
Choosing between its and it'sGet 3 of 4 questions to level up!
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Unit test

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About this unit

Commas are the superheroes of punctuation! They can perform many different functions. Apostrophes are most often used to stand in for missing letters or to show possession. In the rarest of cases, they can be used to form plurals. Let's learn more!