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1st Grade Writing (Common Core) • Language

Commas in Dates & Lists

Learn where the little comma mark goes when you write a date or list words in a row!

Explore the lesson 8 min read
A writing pencil with notebook and spelling check for elementary writing
Inside this lesson 10 sections 5 questions 7 figures

Section 1

Why Do We Need Commas?

Have you ever tried to read a really long word without any spaces? It would be so hard! A long time ago, people figured out that writing needs little marks to help readers know when to pause. One of those little marks is the comma. It looks like a tiny curved tail: ,

The comma helps us read sentences the right way. Without commas, words can get all jumbled up and confusing. Let's look at how people started using commas!

Long, Long Ago

People wrote words with no spaces and no commas at all. It was very hard to read!

About 2,000 Years Ago

Writers in Greece and Rome started putting dots between words to show where to stop and breathe.

About 500 Years Ago

When the printing press was invented, printers picked the comma shape , we still use today!

Today

We use commas every day — in dates, in lists, and in many other places. You are learning this right now!

So the big question is: Where does the comma go? In this lesson, you will learn two important places where commas belong. Ready? Let's go!

Section 2

The Two Comma Rules

In first grade, you need to know two special comma rules. These rules are easy to learn and you will use them all the time when you write!

1

Commas in Dates

When you write a date, put a comma between the day number and the year. Example: July 4, 2025
2

Commas in a List

When you list three or more words in a row, put a comma after each word — except the last one. Example: I like cats, dogs, and fish.
3

A Comma Is a Pause

When you see a comma, you take a tiny pause. Try reading "red, blue, and green" out loud. Feel the little stops?
4

Don't Forget the "And"

In a list, the word "and" (or "or") goes before the last word. A comma can go before "and" too!
✦

Key Takeaway

Think of commas like tiny stop signs on the road. 🛑 When you are driving a toy car down a sentence, the comma tells you to slow down for just a moment before you keep going. In a date, the comma gives your eyes a rest between the day and the year. In a list, each comma tells you, "Here comes another thing!"

Section 3

See It!

Let's look at a picture that shows where commas go in a date. The comma sits right between the day number and the year. It is like a little bridge that connects them!

March15,2025MONTHDAYCOMMA GOES HERE!YEARThe comma goes between the day number and the year.
Diagram showing comma placement in a date: March 15, 2025

See how the comma sits right after the number 15 and before the year 2025? The month name comes first, then the day number, then the comma, then the year. Easy!

Now let's see a picture of a list with commas:

COMMAS IN A LISTI like apples, bananas, and grapes.ITEM 1ITEM 2ITEM 3COMMA!COMMA!🍎 Three items in a list = two commasPut a comma after each item, except the last one.
Diagram showing commas separating words in a list: I like apples, bananas, and grapes.

Look at the pink commas! Each one comes after a word in the list. The word "and" tells us the last item is coming. You can see that with three items, we need two commas.

Section 4

How It Works

Commas in Dates

When you write a date, you write the month name first. Then you write the day number. Then you put a comma. Then you write the year. Here is the pattern:

Date Pattern

Month+Day,YearMonth + Day, Year

Example: January 1, 2025

Here are more examples:

September 5, 2024

December 25, 2023

My birthday is June 10, 2018.

Commas in a List (Series)

When you write three or more words in a row, those words make a series. A series is just a fancy word for a list! You put a comma after each word — but not after the last word. The word "and" or "or" connects the last two things.

List Pattern

Word,Word,andWordWord, Word, and Word

Example: red, blue, and green

Here are more list examples:

I can run, jump, and swim.

She has a dog, a cat, and a fish.

Do you want red, blue, or green?

Notice that in each list, we have three items and two commas. If you had four items, you would use three commas!

I ate toast, eggs, fruit, and milk.

Section 5

Types of Lists & Dates

Let's look at different kinds of lists and dates so you can see commas in action!

TypeExampleHow Many Commas?
DateMay 3, 20251 comma
List of 3 thingscats, dogs, and birds2 commas
List of 4 thingsred, blue, green, and yellow3 commas
List of actionsrun, hop, and skip2 commas
List with "or"cake, pie, or cookies2 commas

See the pattern? For a date, you always use just one comma. For a list, count the items. The number of commas is always one less than the number of items!

✦

Key Takeaway

Think of commas in a list like the spaces between beads on a string. 📿 If you have three beads, there are two spaces between them. If you have four beads, there are three spaces. Commas are the spaces between words in your list!

Section 6

Worked Example

Let's practice putting commas in the right places together!

Adding Commas to a Sentence

  1. 1

    Step 1 — Read the sentence

    Here is a sentence with no commas: On April 12 2025 I ate pizza salad and cake. Something is missing! We need commas.
  2. 2

    Step 2 — Find the date

    Look for a date. We see April 12 2025. That's a month, a day, and a year. We need a comma between 12 and 2025.
    On April 12, 2025 I ate pizza salad and cake.
  3. 3

    Step 3 — Find the list

    Now look for a list. We see pizza salad and cake. That's three things! We need commas between the items.
    On April 12, 2025 I ate pizza, salad, and cake.
  4. 4

    Step 4 — Check your work

    Read it out loud: "On April 12, 2025, I ate pizza, salad, and cake." 🎉 Each comma gives you a little pause. It sounds great! We added three commas — one for the date and two for the list.
    On April 12, 2025, I ate pizza, salad, and cake.

Section 7

Tips & Common Mistakes

Here are some things to watch out for when you use commas!

❌ Wrong✅ RightWhy?
June 1 2025June 1, 2025A comma goes between the day and the year.
I like cats dogs and fish.I like cats, dogs, and fish.Put commas between the items in a list.
I like cats, and fish.I like cats and fish.Only two items — no comma needed!
red, blue, and, greenred, blue, and greenDon't put a comma after "and."
✦

Key Takeaway

Remember: you only need commas in a list when you have three or more things. If you just say "cats and dogs," that's only two things — no comma needed! But "cats, dogs, and fish" has three things, so you need commas. Think of it like a team photo. 📸 If just two friends stand together, they're fine. But if three or more friends line up, you need little spaces (commas!) between them so everyone can see each person clearly.

Section 8

What's Coming Next?

You are learning two comma rules right now. But did you know there are even more comma rules you will learn as you grow up? Here is a sneak peek!

What You Know Now (1st Grade)What You'll Learn Later
Commas in dates: July 4, 2025Commas in addresses: Austin, Texas
Commas in a list: red, blue, and greenCommas after greetings: Dear Mom,
Lists of single wordsLists of groups of words (phrases!)

You are building a strong base for writing! Every time you use a comma the right way, you are getting ready for even bigger and better sentences. Great job! 🌟

Section 9

Practice Problems

Try these problems! Click "Show Answer" when you are ready to check.

Question 1: Problem 1 — What Is a Comma?

What does a comma look like, and what does it do in a sentence?
Show answer
A comma looks like a tiny curved tail: , It tells the reader to take a small pause. In a date, it goes between the day and the year. In a list, it goes between each word. You did great if you knew that! 🌟

Question 2: Problem 2 — Fix the Date

This date is missing a comma. Where should it go? October 31 2025
Show answer
The comma goes between 31 and 2025: October 31, 2025. Nice work! Remember: the comma always goes right after the day number. 🎃

Question 3: Problem 3 — Fix the List

Add commas to this sentence: I can read write and draw.
Show answer
There are three things in the list: read, write, and draw. We need two commas: I can read, write, and draw. Awesome! Three items, two commas. ✏️

Question 4: Problem 4 — Fix Both!

This sentence has a date AND a list. Add all the missing commas: On March 2 2025 we played tag soccer and hide-and-seek.
Show answer
First, fix the date: March 2, 2025. Then fix the list of games: tag, soccer, and hide-and-seek. Full sentence: On March 2, 2025, we played tag, soccer, and hide-and-seek. That's four commas! One for the date, one after the year, and two for the three items. Super job! ⚽

Question 5: Problem 5 — Think About It

Look at this sentence: "I like pizza and milk." Does it need a comma? Why or why not?
Show answer
No, it does not need a comma! There are only two things: pizza and milk. You only need commas in a list when there are three or more things. If the sentence said "I like pizza, milk, and cookies," then we would need commas because there are three things. You are a comma star! ⭐

Summary

What You Learned

Summary

Today you learned two important comma rules! First, when you write a date, you always put a comma between the day number and the year, like this: July 4, 2025. Second, when you write a list of three or more words, you put a comma after each word except the last one, like this: red, blue, and green.

Remember, commas are like little pause signs that help your reader understand your writing. You only use commas in a list when there are three or more items — two items with "and" don't need a comma. Keep practicing, and you will be a comma expert in no time! 🎉

Varsity Tutors • 1st Grade English Language Arts • Commas in Dates & Lists