2ND GRADE ELA • WRITING

Writing to Teach: Informative & Explanatory Texts

Learn how to write paragraphs that teach other people new things using a topic, facts, and definitions!

Why Do We Write to Teach Others?

People have been sharing what they know for a very, very long time! Long before there were computers, books, or even paper, people found ways to teach each other new things. Let's look at how informative writing (writing that teaches) has grown over time.

Long, long ago
Cave people drew pictures on walls to share what they knew about animals and hunting. These were some of the first "how-to" guides!
Ancient Egypt
People in Egypt wrote on scrolls made from a plant called papyrus. They wrote facts about math, stars, and how to build things.
Books are invented
When the printing press was built, people could make lots of copies of books. Now anyone could read facts and learn new things!
Today
We write informative texts in school, online, and in books every day. When you write a report about penguins or explain how to play a game, you are doing informative writing!

So here is the big question this lesson will help you answer: How do I write a paragraph that teaches someone something new, using a topic, facts, and definitions? Let's find out!

The Key Ideas You Need to Know

Before you start writing, you need to understand four important words. These are the building blocks of an informative text. Think of them like ingredients in a recipe—you need all of them to make your writing great!

1

Topic

A topic is the main thing your writing is about. It answers the question: "What am I writing about?" For example, your topic could be "frogs" or "the sun."
2

Fact

A fact is something that is true and can be checked. "Dogs have four legs" is a fact. Facts help the reader believe what you are saying.
3

Definition

A definition tells the reader what a word means. If you use the word "habitat," you can add: "A habitat is the place where an animal lives."
4

Closing

A closing is the last sentence. It wraps up your writing. It can say the most important idea one more time or share a fun thought.
KEY TAKEAWAY
Think of informative writing like packing a lunchbox. The topic is the lunchbox itself—it holds everything together. The facts and definitions are the yummy foods you put inside. The closing is the lid that snaps it shut so nothing falls out!

The Parts of an Informative Text

Let's look at a picture that shows what an informative text looks like. Every good informative paragraph has three main parts: an introduction (where you name the topic), a body (where you share facts and definitions), and a closing (where you wrap up).

Diagram showing the three parts of an informative paragraph.

Look at the diagram above. The blue box at the top is where you introduce your topic. The big purple-blue box in the middle is where you add your facts and definitions. The green box at the bottom is your closing. When you put all three parts together, you have an informative paragraph!

How to Write an Informative Text Step-by-Step

Writing an informative text is like building with blocks. You do it one step at a time. Here are the steps you follow every time you write to teach someone something new.

Each step builds on the one before it. First, you pick a topic you know about. Then you write a sentence that names your topic. Next, you add facts that are true and teach the reader. If you use a hard word, you add a definition so the reader understands it. Finally, you close with a strong last sentence!

Facts vs. Definitions — What's the Difference?

Facts and definitions are both important, but they do different jobs. Let's compare them so you never mix them up!

TypeWhat It DoesExample
FactTells something that is true and can be checked"The Earth goes around the Sun."
DefinitionTells what a word means"An orbit is the path something takes around another thing."
FactGives details that teach the reader"Bees have six legs."
DefinitionExplains a tricky word"An insect is a small animal with six legs and three body parts."
FactCan be about numbers, places, or animals"There are seven continents on Earth."
DefinitionHelps the reader learn a new word"A continent is a very large area of land."

Here is a helpful trick. A fact answers the question "What is true about this?" A definition answers the question "What does this word mean?" When you use both in your writing, you make your paragraph really strong.

KEY TAKEAWAY
Imagine you are building a sandcastle. Facts are like the sand—they are the strong stuff you use to build your walls and towers. Definitions are like the little flags you stick on top—they help people understand what each part is called. You need both to make a sandcastle that is strong and makes sense!

Worked Example: Writing About Dogs

Let's write a whole informative paragraph together! Watch how each step works.

Writing About Dogs
1
Step 1 — Pick a TopicWe will write about dogs. Dogs are an animal that most kids know about, so we have lots to share!
2
Step 2 — Write a Topic SentenceThe topic sentence names the topic and tells the reader what we will explain.
"Dogs are one of the most popular pets in the world."
3
Step 3 — Add FactsNow we add facts that teach the reader about dogs.
"There are over 200 different kinds of dogs." "Dogs can be trained to follow commands like sit, stay, and shake."
4
Step 4 — Add a DefinitionWe used the word "commands." Some readers might not know what that word means. So we add a definition!
"A command is a word or signal that tells a dog what to do."
5
Step 5 — Write a Closing SentenceNow we wrap it all up with a strong closing sentence.
"It is easy to see why so many people love having dogs!"
6
The Full ParagraphDogs are one of the most popular pets in the world. There are over 200 different kinds of dogs. Dogs can be trained to follow commands like sit, stay, and shake. A command is a word or signal that tells a dog what to do. It is easy to see why so many people love having dogs!
Look at that! We have a topic sentence, two facts, a definition, and a closing. That's a complete informative paragraph! 🎉

Tips for Great Writing & Common Mistakes

Even great writers make mistakes sometimes! Here are some tips to help you, and some things to watch out for.

✅ DO THIS❌ WATCH OUT FOR THIS
Start with a clear topic sentence.Starting with a random detail, not the topic.
Use facts that are true and about your topic.Making things up or using opinions instead of facts.
Add a definition when you use a hard word.Using big words without explaining them.
Finish with a closing sentence.Stopping without wrapping up your ideas.
Stay on topic the whole time.Talking about something that doesn't match your topic.

Here is an example of a mistake. If your topic is "cats," you should not write a sentence about your favorite movie. That sentence would be off-topic. Every sentence should help the reader learn about cats!

KEY TAKEAWAY
Think of your paragraph like a train. The topic sentence is the engine at the front—it leads the way. Each fact and definition is a train car that follows the engine. The closing is the caboose at the end. If you put a train car that doesn't belong on your train (like a sentence about pizza in a paragraph about cats), the train goes off track!

What Comes Next?

You are learning to write informative paragraphs. That is an amazing start! As you grow as a writer, your informative texts will get longer and fancier. Here is what you can look forward to.

WHAT YOU DO NOW (2ND GRADE)WHAT YOU'LL DO LATER
Write one paragraph with a topic sentence.Write many paragraphs, each about a different part of the topic.
Use 2–3 facts.Use facts from books, websites, and interviews.
Add 1 definition.Use a glossary (a list of definitions at the end).
Write a closing sentence.Write a whole closing paragraph that sums everything up.

Every big building starts with one brick. Right now, you are learning to lay that first brick really well. The paragraphs you write today are the foundation for the amazing reports and essays you will write as you get older!

Practice Time!

Try these problems to practice what you learned. Click "Show Answer" when you are ready to check your thinking!

PROBLEM 1WHAT DO YOU KNOW?
What is a topic in an informative text?
PROBLEM 2FACT OR DEFINITION?
Read this sentence: "A mammal is a warm-blooded animal that has hair or fur." Is this sentence a fact or a definition?
PROBLEM 3FIND THE PROBLEM
Read this paragraph. Something is wrong. Can you find the mistake? "Butterflies are beautiful insects. They have four colorful wings. I like to eat pizza for lunch. Butterflies drink a sweet liquid called nectar."
PROBLEM 4WRITE YOUR OWN
Write an informative paragraph about the sun. Use these pieces to help you: 🎯 Topic: The Sun 📚 Fact 1: The sun is a star. 📚 Fact 2: The sun gives Earth light and heat. 📖 Definition: A star is a big ball of hot gas that shines in space. Write a topic sentence, use the facts and definition above, and add a closing sentence. Then click below to see one way to write it!
PROBLEM 5CHALLENGE!
Think of an animal you know a lot about. Write a full informative paragraph about it. Your paragraph must have: • A topic sentence that names the animal • At least two facts • One definition of a word the reader might not know • A closing sentence When you are done, read your paragraph out loud. Does every sentence teach the reader about your animal?

What We Learned

In this lesson, you learned how to write an informative text—a piece of writing that teaches someone something new. Every good informative paragraph starts with a topic sentence that tells the reader what the writing is about. Then, you add facts (true details that can be checked) and definitions (explanations of what hard words mean) to help the reader learn. Finally, you end with a closing sentence that wraps up your ideas.

Remember the five steps: pick a topic, write a topic sentence, add facts, add definitions when needed, and write a strong closing. Keep every sentence on topic, like train cars on a track. You are already on your way to becoming a great writer!

Varsity Tutors • 2nd Grade English Language Arts • Informative & Explanatory Writing