Courseversity

Cause and effect

Primary EducationGrade 4English & Language ArtsCV-PRI-G04-ELA-U04-L0345–60 min

You will learn

  • Tell cause from effect.
  • Use signal words.
  • Trace a chain of events.
  • Write cause and effect sentences.

Version 0.2 · expanded edition · built from cited public sources Content is based on the official frameworks and sources listed under Sources and standards. No official endorsement is claimed. Written in the style of common primary school assessments. No exam result is promised.

Student lesson

The lesson in 60 seconds

  1. Ask: What happened?
  2. Ask: Why did it happen?
  3. Find signal words.
  4. Check the order.

Words to know

cause
why something happens
effect
what happens as a result
chain of events
events that lead one to the next
result
an outcome of something

1. Discover: Why the soil washed away

Heavy rain fell for three days. Because farmers had cut down the trees on the hillside, the soil had nothing to hold it. As a result, the rain washed the soil into the river. The river turned brown, and the fields below were left bare.

Think: What caused the soil to wash away?

2. Understand: Because and so

Idea 1: Cause and effect

A cause is why something happens. An effect is the result. Cutting trees (cause) led to soil washing away (effect).

Idea 2: Signal words

Look for because, so, as a result, therefore, due to, led to.

Idea 3: Chain

One effect can cause another, forming a chain of events: no trees → soil washed away → river brown → bare fields.

Remember: A cause makes something happen; the effect is the result; effects can link into a chain.

3. Worked examples

Example 1 (I show you): Cause

What was the cause of the soil washing away?

  1. No trees.

Answer: farmers cut down the trees and heavy rain fell

Example 2 (We do it together): Effect

What was one effect?

  1. River colour.

Answer: the river turned brown (or fields were left bare)

Example 3 (You try): Signal

Name a signal phrase.

Show the steps and answer
  1. As a ___.

Answer: as a result (or because)

Did you know?

Tree roots help hold soil in place, which is why forests protect hillsides.

Why this matters

Understanding cause and effect helps you explain how and why things happen.

4. Explore: Chain maker

Build a chain.

  1. Pick a topic such as a flood.
  2. Write the first cause.
  3. Add each effect.
  4. Use signal words.
Think about it: what did you notice?

You can trace cause and effect.

5. Practise

Say it in a sentence

Use these starters when you talk about the lesson. Say them out loud.

  • ___ happened because ___.
  • As a result, ___.
  • The cause was ___.
  • The effect was ___.

Guided practice

Question 1. Why something happens is the ___.

cause

Question 2. What happens as a result is the ___.

effect

Question 3. Events that lead one to the next form a ___ of events.

chain

Independent practice

Level 1: Start

  1. Why something happens is the ___.
  2. What happens as a result is the ___.
  3. Events that lead one to the next form a ___ of events.
  4. An outcome is a ___.
  5. The river turned ___.

Level 2: Grow

  1. How long did it rain?
  2. What had nothing to hold it?
  3. What was left bare?

Level 3: Stretch

  1. Does cause come before effect?
  2. Is “because” a signal word?
  3. Can an effect cause another effect?

Answers are in the answer key below. Try first, then check.

6. Apply: English in everyday life

Write a cause and effect chain of four links about a real event.

Show a sample answer

a chain

Another one. Write three cause and effect sentences from your life or reading.

Show a sample answer

a completed task

7. Common mistakes

Mistake: Rushing without checking.
Fix: Slow down and check your work.
Another mistake: Skipping the worked example.
Fix: Study the example first, then try.

8. Lesson summary and revision card

I can…

  • I can tell cause from effect.
  • I can use signal words.
  • I can trace a chain of events.
  • I can write cause and effect sentences.

9. Check and master

Answer all 14 questions. You will see feedback after each one.

1. A cause is ___ something happens.

2. An effect is a ___.

3. A chain of events is events that lead to the ___.

4. A signal word for cause is ___.

5. What was a cause of the soil washing away?

6. What was an effect of the heavy rain?

7. What happened to the river?

8. What happened to the fields?

9. Which phrase shows an effect follows?

10. Which is the first link of the chain?

11. Which is the last link?

12. Why plant trees on hillsides?

Challenge 1. Which sentence shows cause and effect?

Challenge 2. What is the effect: The lamp broke, so the room went dark?

Your result appears here after you answer every question.

10. Key takeaways

  • Ask: What happened?
  • Ask: Why did it happen?
  • Find signal words.
  • Check the order.

11. Next lesson

Next lesson: Compare and contrast. Keep going with the next idea in this course.

Exam practice

These questions are written in the style of common school and international primary assessments. Try them on your own, without looking back. Then check your answers in the marking guide. The marks are shown in brackets.

  1. What is a cause? [1 mark]
  2. What is an effect? [1 mark]
  3. Give two signal words for cause and effect. [2 marks]
  4. Name a cause and its effect from the passage. [2 marks]
  5. Explain how to find a cause and effect. [3 marks]

Total: 9 marks.

Marking guide and model answers
  1. why something happens [1]
  2. what happens as a result [1]
  3. because [1]; as a result/so [1]
  4. trees cut down [1]; soil washed away [1]
  5. ask what happened [1]; ask why it happened [1]; look for signal words and check the order [1]

Score guide: 8 to 9 = secure. 6 to 7 = nearly there, revise the parts you missed. Under 6 = work through the lesson again with a grown-up.

Printable worksheet

  1. Why something happens is the ___.
  2. What happens as a result is the ___.
  3. Events that lead one to the next form a ___ of events.
  4. An outcome is a ___.
  5. The river turned ___.
  6. How long did it rain?
  7. What had nothing to hold it?
  8. What was left bare?
  9. Does cause come before effect?
  10. Is “because” a signal word?

Homework

Write three cause and effect sentences from your life or reading.

Answer key and marking scheme

Question Expected response Marks
1. Why something happens is the ___. cause 1
2. What happens as a result is the ___. effect 1
3. Events that lead one to the next form a ___ of events. chain 1
4. An outcome is a ___. result 1
5. The river turned ___. brown 1
6. How long did it rain? three days 1
7. What had nothing to hold it? the soil 1
8. What was left bare? the fields below 1
9. Does cause come before effect? yes 1
10. Is “because” a signal word? yes 1
Total 10

Independent practice answers. Level 1: 1 cause; 2 effect; 3 chain; 4 result; 5 brown. Level 2: 1 three days; 2 the soil; 3 the fields below. Level 3: 1 yes; 2 yes; 3 yes.

Quiz answers: 1 B, 2 C, 3 A, 4 B, 5 C, 6 A, 7 B, 8 C, 9 A, 10 B, 11 C, 12 A, Challenge 1 B, Challenge 2 C.

Mastery and remediation

Objective Bronze (Developing) Silver (Proficient) Gold (Advanced)
O1 Tell cause from effect Shows this with help from an adult or a picture Does this independently and explains how they know Explains it clearly and uses it in a new situation
O2 Use signal words Shows this with help from an adult or a picture Does this independently and explains how they know Explains it clearly and uses it in a new situation
O3 Trace a chain of events Shows this with help from an adult or a picture Does this independently and explains how they know Explains it clearly and uses it in a new situation
O4 Write cause and effect sentences Shows this with help from an adult or a picture Does this independently and explains how they know Explains it clearly and uses it in a new situation

Courseversity badge thresholds (overall quiz score): Gold = 90–100%; Silver = 80–89.9%; Bronze = 70–79.9%. A badge is never a full record of progress.

If a learner struggles

  1. Find the misconception: Rushing without checking. Slow down and check your work.
  2. Explain another way: use real objects, pictures or actions first, then words.
  3. Show a simpler example: Re-read the examples slowly and use the sentence frames.
  4. Guided practice: work through one example together and let the learner try the next one.
  5. Reassess: use the quiz again or the worksheet.
  6. Move on when the learner shows Silver-level evidence independently.

For parents and guardians

In this lesson your child practises a key Grade 3 English skill with clear examples and a quiz. You do not need to be an expert to help.

  • Listen while your child explains the idea.
  • Ask for one new example.
  • Praise effort and careful work.
  • Ask “how do you know?” after each answer, and listen.
  • Praise effort, not only right answers. Mistakes are how we learn.
  • Ten to fifteen minutes a day is better than one long session.

Teacher package

1–5. Objectives, prerequisites, materials, preparation, duration

Lesson objectives. Learners will: tell cause from effect; use signal words; trace a chain of events; write cause and effect sentences.

Prerequisite knowledge. Text structures.

Materials. Chart paper or board, pencils, picture or word cards, a reading book if available. Low-resource options: use chalk or charcoal on a board or wall, drawings in the sand, and objects from the classroom instead of printed materials.

Preparation. Write the key words and examples on the board or on cards before the lesson.

Suggested duration. 45–60 minutes. It can be split into two shorter sessions.

6–9. Teaching procedure, explanation notes, guided and independent activities

Introduction (5 min). Introduce the idea with the opening example.

Explanation (10 min). Teach the key words.

Guided activity (10 min). Practise together.

Independent activity (10 min). Check understanding with the quiz.

Assessment and reflection (5 min). Ask each learner to say one thing they learned and how they know it.

Key questions. What is the key idea? Can I give my own example?

Teacher explanation notes. Move from the spoken word to pictures and then to print. Read aloud often, point to the words, and let learners hear and say before they read and write.

10–12. Differentiation, formative assessment, common misconceptions

Support. Use the sentence frames and work with a partner. Extension. Create a harder example of your own.

Formative assessment. Listen to learners read and explain, ask “how do you know?”, and check the independent work.

Misconceptions. Rushing without checking. Slow down and check your work.

13–15. Assessment questions, answer keys, marking scheme

Use the quiz, the 9-mark exam practice and the worksheet on this page. All answers and marking guides are in the answer sections above. Re-check every answer before use.

16–19. Remediation, enrichment, homework, teacher reflection

Remediation. Re-read the examples slowly and use the sentence frames. Enrichment. Make up your own example and teach it to someone at home. Homework. See above.

Teacher reflection. After teaching, record: which ideas learners understood; which misconceptions occurred; which activities worked; which learners need more practice; and what to improve next time.

Sources and standards

This lesson is based on the sources below, and no official endorsement is claimed. Reference starting points: Common Core State Standards for English Language Arts, Cambridge Primary and the IB Primary Years Programme. Where a standard code is named, it points to the official framework.

Official standards for this topic area. Common Core State Standards for English Language Arts (official site): Grade 4 » Reading: Foundational Skills; Grade 4 » Reading: Literature; Grade 4 » Reading: Informational Text. These pages list the standards that cover this topic area; read them alongside the lesson.

Research used to shape this lesson. Common Core RI.4.3 (explain events, procedures, ideas, or concepts in a historical, scientific, or technical text, including what happened and why) and RI.4.5; Cambridge Primary English Stage 4 (non-fiction). These sources informed the lesson.

Keep learning

Same topic in other grades

Scroll to Top