You will learn
- Define cause and effect.
- Find signal words.
- Match causes to effects.
- Explain a chain of events.
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
- Cause: why it happened.
- Effect: what happened.
- Signal words: because, so, as a result.
- Ask: What happened? Why?
Words to know
why something happens
what happens as a result
a word that shows a link, such as because
what follows from something
1. Discover: Blocked drains
In some towns, people throw litter into drains. The litter blocks the water from flowing. When heavy rain falls, the water cannot drain away, so the streets flood. As a result, people cannot walk safely and shops close for the day. Cleaning drains helps prevent floods.
Think: What is the cause of the flood?
2. Understand: Why things happen
Idea 1: Cause and effect
A cause is why something happens. An effect is what happens as a result.
Idea 2: Signal words
Look for signal words: because, so, as a result, therefore.
Idea 3: A chain
Effects can become new causes. Litter blocks drains, then rain floods streets, then shops close.
3. Worked examples
Example 1 (I show you): Cause
What blocks the drains?
- What do people throw?
Answer: litter
Example 2 (We do it together): Effect
What happens when heavy rain falls?
- The streets…
Answer: the streets flood
Example 3 (You try): Signal
Find a signal word.
Show the steps and answer
- Look for so or as a result.
Answer: so (or as a result)
Did you know?
Many floods in cities happen because drains are blocked or too small for heavy rain.
Why this matters
Understanding causes helps us solve problems and make good decisions.
4. Explore: Cause chain
Make a cause and effect chain.
- Choose an event.
- Write its cause.
- Write its effect.
- Add signal words.
Think about it: what did you notice?
You can explain causes and effects.
5. Practise
Say it in a sentence
Use these starters when you talk about the lesson. Say them out loud.
- ___ happened because ___.
- The cause is ___.
- As a result, ___.
- The effect is ___.
Guided practice
Question 1. Why something happens is the ___.
cause
Question 2. What happens as a result is the ___.
effect
Question 3. A word like because is a ___ word.
signal
Independent practice
Level 1: Start
- Why something happens is the ___.
- What happens as a result is the ___.
- A word like because is a ___ word.
- What follows from something is the ___.
- Litter blocks the ___.
Level 2: Grow
- What causes the streets to flood?
- What is an effect of the flood?
- How can floods be prevented?
Level 3: Stretch
- Is because a signal word?
- Is cause before effect?
- Can an effect cause another effect?
Answers are in the answer key below. Try first, then check.
6. Apply: English in everyday life
Find a cause and effect in a news story or textbook.
Show a sample answer
a cause and effect
Another one. Write two cause and effect sentences using because and so.
Show a sample answer
a completed task
7. Common mistakes
Fix: Slow down and check your work.
Fix: Study the example first, then try.
8. Lesson summary and revision card
- I can define cause and effect.
- I can find signal words.
- I can match causes to effects.
- I can explain a chain of events.
9. Check and master
Answer all 14 questions. You will see feedback after each one.
Your result appears here after you answer every question.
10. Key takeaways
- Cause: why it happened.
- Effect: what happened.
- Signal words: because, so, as a result.
- Ask: What happened? Why?
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.
- What is a cause? [1 mark]
- What is an effect? [1 mark]
- Name a signal word. [1 mark]
- Give the cause and effect of the flood. [2 marks]
- Explain how to find a cause and effect. [3 marks]
Total: 8 marks.
Marking guide and model answers
- why something happens [1]
- what happens as a result [1]
- because/so/as a result [1]
- cause blocked drains/heavy rain [1]; effect streets flood [1]
- ask what happened [1]; ask why [1]; look for signal words [1]
Score guide: 7 to 8 = secure. 5 to 6 = nearly there, revise the parts you missed. Under 5 = work through the lesson again with a grown-up.
Printable worksheet
- Why something happens is the ___.
- What happens as a result is the ___.
- A word like because is a ___ word.
- What follows from something is the ___.
- Litter blocks the ___.
- What causes the streets to flood?
- What is an effect of the flood?
- How can floods be prevented?
- Is because a signal word?
- Is cause before effect?
Homework
Write two cause and effect sentences using because and so.
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. A word like because is a ___ word. | signal | 1 |
| 4. What follows from something is the ___. | result | 1 |
| 5. Litter blocks the ___. | drains | 1 |
| 6. What causes the streets to flood? | blocked drains and heavy rain | 1 |
| 7. What is an effect of the flood? | shops close | 1 |
| 8. How can floods be prevented? | clean the drains | 1 |
| 9. Is because a signal word? | yes | 1 |
| 10. Is cause before effect? | yes | 1 |
| Total | 10 |
Independent practice answers. Level 1: 1 cause; 2 effect; 3 signal; 4 result; 5 drains. Level 2: 1 blocked drains and heavy rain; 2 shops close; 3 clean the drains. 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 Define cause and 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 Find 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 Match causes to effects | 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 Explain 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 |
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
- Find the misconception: Rushing without checking. Slow down and check your work.
- Explain another way: use real objects, pictures or actions first, then words.
- Show a simpler example: Re-read the examples slowly and use the sentence frames.
- Guided practice: work through one example together and let the learner try the next one.
- Reassess: use the quiz again or the worksheet.
- 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: define cause and effect; find signal words; match causes to effects; explain a chain of events.
Prerequisite knowledge. Text features.
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 8-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 3 » Reading: Foundational Skills; Grade 3 » Reading: Literature; Grade 3 » 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.3.3 (describe the relationship between a series of historical events, scientific ideas or concepts, or steps in technical procedures using language that pertains to time, sequence, and cause/effect) and RI.3.8; Cambridge Primary English Stage 3 (reading non-fiction). These sources informed the lesson.