Third graders sharpen their reading comprehension by learning how one event leads to another, and these cause and effect worksheets give them focused practice with that exact skill. In Grade 3, students move beyond simply retelling a story and start asking why things happen, using signal words like because, so, since, therefore, and as a result to link ideas.

Two common stumbling blocks at this age are reversing the cause and the effect in a sentence and confusing time-order words with true cause-and-effect signals. Building on second grade work with sequencing and simple connections, third graders now tackle multi-sentence passages and short paragraphs where the relationship is not always stated directly. Mastering cause and effect in third grade prepares students for fourth grade, when they will analyze longer informational texts, identify chains of events in chapter books, and write structured paragraphs explaining why events happen.

These cause and effect worksheets blend sentence fixing, fill-in-the-blank, matching, and short passages so students get well-rounded practice.

Worksheet Preview

Browse all 12 printable worksheets below — click any card to open the full page.

Easy
Busy Bee
Cause and Effect
Name:
Date:
Grade: Grade 3
Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
Part B: Fill in the Blank
Write the missing word or number on each line.
1. The flowers grew tall  
2. It started to rain,  
3.  
4. The ice cream melted  
Part C: True or False?
Read each statement. Circle True or False.
1. A cause is the reason something happens.
T F
2. An effect always comes before the cause in a sentence.
T F
3. The word because is a signal word for cause and effect.
T F

Cause and Effect
Easy
Busy Bee
Cause and Effect
Name:
Date:
Grade: Grade 3
Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
Part B: Fill in the Blank
Write the missing word or number on each line.
1. The baby cried  
2. He forgot his lunch,  
3. The road was icy.  
4.  
Part C: True or False?
Read each statement. Circle True or False.
1. The word so can signal an effect that follows a cause.
T F
2. A cause is what happens as a result of something else.
T F
3. The word therefore is a cause-and-effect signal word.
T F

Cause and Effect
Easy
Busy Bee
Cause and Effect
Name:
Date:
Grade: Grade 3
Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
Part B: Fill in the Blank
Write the missing word or number on each line.
1. The kite flew high  
2. She forgot her lunch money,  
3.  
4. The turtle moved slowly.  
Part C: True or False?
Read each statement. Circle True or False.
1. An effect is what happens as a result of a cause.
T F
2. The word since can never be used as a cause-and-effect signal word.
T F
3. In the sentence 'She smiled because she won the race,' winning the race is the cause.
T F

Cause and Effect
Easy
Busy Bee
Cause and Effect
Name:
Date:
Grade: Grade 3
Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
Part B: Fill in the Blank
Write the missing word or number on each line.
1. The bird built a nest  
2. The milk spilled on the floor,  
3.  
4. He left his toy outside in the rain.  
Part C: True or False?
Read each statement. Circle True or False.
1. A single cause can lead to more than one effect.
T F
2. The word but is a common cause-and-effect signal word.
T F
3. In the sentence 'He was late because he missed the bus,' missing the bus is the cause.
T F

Cause and Effect
Medium
Busy Bee
Cause and Effect
Name:
Date:
Grade: Grade 3
Part A: Fill in the Blank
Write the missing word or number on each line.
1. The puppy chewed the shoe  
2. Maria studied hard for her test,  
3.  
4. The teacher turned off the lights.  
5. He left his bike in the rain,  
6. The soil was very dry  
7.  
8. She practiced piano every day. As a  
9. The pond froze over  
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
The boy forgot his homework.
→
Her stomach hurt.
It rained all morning.
→
Water spilled on the floor.
The kitten knocked over the vase.
→
The playground was muddy.
She ate too much candy.
→
He got a zero on the assignment.

Cause and Effect
Medium
Busy Bee
Cause and Effect
Name:
Date:
Grade: Grade 3
Part A: Fill in the Blank
Write the missing word or number on each line.
1. The school bus was late  
2. Jake left the gate open,  
3.  
4. She watered the garden every day.  
5. The glass broke  
6. He did not wear sunscreen,  
7.  
8. The team practiced all season. As a  
9. She stayed up too late,  
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
The alarm did not go off.
→
The floor got dirty.
Strong winds blew all night.
→
A tree branch fell down.
The dog tracked mud inside.
→
His friend was grateful.
He shared his lunch with a friend.
→
She woke up late for school.

Cause and Effect
Medium
Busy Bee
Cause and Effect
Name:
Date:
Grade: Grade 3
Part A: Fill in the Blank
Write the missing word or number on each line.
1. The candle went out  
2. He practiced his speech many times,  
3.  
4. The pipes froze overnight.  
5. The rabbit dug a burrow  
6. She mixed the paint colors together,  
7.  
8. The farmer planted seeds in the spring. As a  
9. Nobody remembered to feed the fish,  
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
The boy left his bike in the driveway.
→
He had energy all day at school.
She studied her map before the trip.
→
The car backed over the bike.
The campfire was not put out properly.
→
She did not get lost along the way.
He ate a big breakfast every morning.
→
The dry grass caught fire.

Cause and Effect
Medium
Busy Bee
Cause and Effect
Name:
Date:
Grade: Grade 3
Part A: Fill in the Blank
Write the missing word or number on each line.
1. The car would not start  
2. The cat knocked the cup off the table,  
3.  
4. He forgot to set his alarm.  
5. The children laughed  
6. It was getting dark outside,  
7.  
8. They saved money all year. As a  
9. The roof had a leak,  
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
The girl did not eat breakfast.
→
The plant grew tall and green.
Heavy snow fell overnight.
→
It popped with a loud bang.
The balloon was filled with too much air.
→
School was canceled for the day.
He watered the plant every day.
→
Her stomach growled during class.

Cause and Effect
Hard
Busy Bee
Cause and Effect
Name:
Date:
Grade: Grade 3
Part A: Multiple Choice
Circle the best answer for each question.
1. Liam forgot to water the plant for two weeks. The leaves turned brown and fell off. What was the cause?
2. Which signal word best completes this sentence? "The river flooded ___ it rained for five days straight."
3. Sara left her crayons on the sunny windowsill. When she came back, they had melted. What was the effect?
4. Which sentence correctly shows a cause followed by an effect?
Part B: Fill in the Blank
Write the correct answer on each line.
1. The squirrel gathered acorns  
2. Nobody could hear the speaker.  
3. The students did not study. As a  
4.  
5. The bridge was closed for repairs,  

Cause and Effect
Hard
Busy Bee
Cause and Effect
Name:
Date:
Grade: Grade 3
Part A: Multiple Choice
Circle the best answer for each question.
1. The town had a drought all summer. Farmers lost most of their crops. What signal word best connects these ideas?
2. Emma practiced her spelling words every night. She got a perfect score on the test. Which is the effect?
3. Which pair of sentences shows a cause and its effect? A) The dog was hungry. B) It rained on Tuesday. C) She filled the dog bowl. D) The park was crowded.
4. A story says: "Since the electricity went out, the family played board games by candlelight." What is the cause?
Part B: Fill in the Blank
Write the correct answer on each line.
1. The volcano erupted,  
2.  
3. The teacher explained the lesson twice.  
4. He left the window open during the storm. As a  
5.  

Cause and Effect
Hard
Busy Bee
Cause and Effect
Name:
Date:
Grade: Grade 3
Part A: Multiple Choice
Circle the best answer for each question.
1. The class hamster escaped from its cage overnight. In the morning, students found wood shavings all over the floor. What was the cause?
2. Which signal word best completes this sentence? "The garden hose had a crack in it, ___ water sprayed in every direction."
3. Maya left her art project outside. It rained during the night. In the morning the paper was soggy and the paint had washed away. What was the effect of the rain?
4. Which sentence uses the word 'therefore' correctly to show cause and effect?
Part B: Fill in the Blank
Write the correct answer on each line.
1. The ants marched into the kitchen  
2. The wind blew the papers off the desk,  
3.  
4. The team practiced every afternoon. As a  
5.  

Cause and Effect
Hard
Busy Bee
Cause and Effect
Name:
Date:
Grade: Grade 3
Part A: Multiple Choice
Circle the best answer for each question.
1. The farmer noticed that rabbits had eaten all the lettuce in the garden. He decided to build a fence around it. What was the cause of the farmer building a fence?
2. Which signal word best completes this sentence? "___ the temperature dropped below freezing, the lake turned to ice."
3. Noah left his bicycle outside all winter without a cover. In the spring he found that the chain was rusty and the tires were flat. What was the effect?
4. Which sentence correctly shows an effect followed by a cause?
Part B: Fill in the Blank
Write the correct answer on each line.
1. The mayor closed the beach  
2. The elevator was broken,  
3. She read one chapter every night.  
4.  
5. The old bridge was not safe. As a  

Cause and Effect

What's Included in This Download

12 Printable Pages covering cause and effect
Complete Answer Key for easy grading
Printer-Friendly Format in black & white
Variety of Activities to keep kids engaged
Common Core Aligned grade 3 standards
Instant PDF Download - no signup required

What You'll Learn

These cause and effect worksheets help grade 3 students develop essential english skills through engaging activities.

How to Use These Worksheets

  1. Download & Print: Click the download button to get the PDF. Print on standard 8.5" x 11" paper.
  2. Start Simple: Begin with easier pages before moving to more challenging activities.
  3. Daily Practice: Dedicate 10-15 minutes each day for consistent learning.
  4. Use Manipulatives: Pair worksheets with physical objects like blocks or counters.
  5. Provide Encouragement: Celebrate progress and effort to build confidence.
  6. Check Progress: Use the included answer key to review work together.

Common Mistakes to Watch For

  • Mixing up which part of the sentence is the cause and which is the effect, especially when the effect is written first and the cause comes after the signal word.
  • Treating any time-order word like then or next as a cause-and-effect signal, instead of looking for words like because, so, since, therefore, and as a result.
  • Forgetting to check whether the relationship makes real-world sense, which leads to answers like 'She wore a coat because the weather was warm' slipping through unnoticed.

Frequently Asked Questions

What is the difference between a cause and an effect in third grade reading?

A cause is the reason something happens, and an effect is what happens as a result. In Grade 3, students learn that the cause comes first in real life, even if it appears later in a sentence. For example, in 'The grass is wet because it rained,' the rain is the cause and the wet grass is the effect.

Which signal words should third graders know for cause and effect?

Third graders should recognize because, so, since, therefore, as a result, and that's why. Words like because and since usually introduce the cause, while so, therefore, and as a result usually introduce the effect. Knowing these signal words helps students quickly spot the relationship between two events in a sentence or short passage.

Why do third graders confuse cause and effect with sequence of events?

Sequence just tells the order things happen, but cause and effect explains why one thing makes another happen. Third graders sometimes assume that whatever comes first in a story is the cause, which is not always true. Teaching them to ask 'Did this make that happen, or did it just happen first?' clears up the confusion.

How can my child practice cause and effect outside of worksheets?

Talk about everyday events using signal words, like 'You finished your homework, so you can play outside.' During read-alouds, pause and ask why a character did something or what happened because of their choice. Watching a short cartoon and asking 'What caused that?' also builds the skill in a fun, low-pressure way.

What should a third grader be able to do with cause and effect by the end of the year?

By the end of Grade 3, students should identify causes and effects in single sentences and short paragraphs, use signal words correctly in their own writing, and explain why events in a story happened. They should also start noticing cause-and-effect chains, where one effect becomes the cause of the next event, in both fiction and informational texts.

Are these worksheets really free?

Yes! All our worksheets are 100% free to download and print. There's no subscription, no hidden fees, and no registration required.

Can I use these in my classroom?

Absolutely! Teachers are welcome to print and use these worksheets in their classrooms. Make as many copies as needed for your students.

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