Courseversity

Lesson

Prefixes and suffixes

Primary EducationGrade 4English & Language ArtsCV-PRI-G04-ELA-U02-L0245–60 min

You will learn

  • Know common prefixes.
  • Know common suffixes.
  • Work out meanings.
  • Build new words.

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. Find the root.
  2. Look at the front for a prefix.
  3. Look at the end for a suffix.
  4. Combine the meanings.

Words to know

prefix
a word part added to the front
suffix
a word part added to the end
root word
the main word part
antonym
a word with the opposite meaning

1. Discover: Word builders

Kofi writes un- + happy = unhappy (not happy). Ayo writes care + -ful = careful (full of care). Ngozi writes re- + build = rebuild (build again), and help + -less = helpless (without help).

Think: What does each prefix and suffix tell you?

2. Understand: Beginnings and endings

Idea 1: Prefixes

A prefix goes at the front and changes meaning: un- and dis- mean not; re- means again; pre- means before; mis- means wrongly.

Idea 2: Suffixes

A suffix goes at the end: -ful means full of; -less means without; -able means can be done; -ly makes an adverb; -ment makes a noun.

Idea 3: Find the root

Remove the prefix and suffix to see the root word. A prefix like un- or dis- often makes an antonym.

Remember: Prefixes and suffixes change a root word’s meaning or job; find the root first.

3. Worked examples

Example 1 (I show you): Prefix

What does unhappy mean?

  1. un- means not.

Answer: not happy

Example 2 (We do it together): Suffix

What does helpless mean?

  1. -less means without.

Answer: without help

Example 3 (You try): Build

Add re- to write.

Show the steps and answer
  1. re- means again.

Answer: rewrite, meaning write again

Did you know?

English has dozens of prefixes and suffixes, but about a dozen cover most words you will meet.

Why this matters

Knowing prefixes and suffixes lets you work out new words quickly.

4. Explore: Word factory

Build words with affixes.

  1. Pick five root words.
  2. Add a prefix or suffix to each.
  3. Write the new meaning.
  4. Use each in a sentence.
Think about it: what did you notice?

You can build and break words.

5. Practise

Say it in a sentence

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

  • The root is ___.
  • The prefix ___ means ___.
  • The suffix ___ means ___.
  • The word means ___.

Guided practice

Question 1. A word part added to the front is a ___.

prefix

Question 2. A word part added to the end is a ___.

suffix

Question 3. The main word part is the ___ word.

root

Independent practice

Level 1: Start

  1. A word part added to the front is a ___.
  2. A word part added to the end is a ___.
  3. The main word part is the ___ word.
  4. Un- and dis- often make an ___.
  5. Careful means full of ___.

Level 2: Grow

  1. Add un- to kind.
  2. Add -less to fear.
  3. Add re- to heat.

Level 3: Stretch

  1. Does -ful mean full of?
  2. Does pre- mean after?
  3. Does mis- mean wrongly?

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

6. Apply: English in everyday life

Make ten new words with prefixes and suffixes and explain each.

Show a sample answer

a word list

Another one. Find five words with prefixes or suffixes in your reading and explain each.

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 know common prefixes.
  • I can know common suffixes.
  • I can work out meanings.
  • I can build new words.

9. Check and master

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

1. A prefix goes at the ___ of a word.

2. A suffix goes at the ___ of a word.

3. The root is the ___ word part.

4. Un- means ___.

5. Re- means ___.

6. -less means ___.

7. -ful means ___.

8. What does unhappy mean?

9. What does helpless mean?

10. What does rebuild mean?

11. What does preview mean?

12. Which word is the antonym of agree?

Challenge 1. Which word means “wrongly placed”?

Challenge 2. Which suffix makes careful from care?

Your result appears here after you answer every question.

10. Key takeaways

  • Find the root.
  • Look at the front for a prefix.
  • Look at the end for a suffix.
  • Combine the meanings.

11. Next lesson

Next lesson: Greek and Latin roots. 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 prefix? Give one example. [2 marks]
  2. What is a suffix? Give one example. [2 marks]
  3. What does helpless mean? [1 mark]
  4. What does rebuild mean? [1 mark]
  5. Explain how to work out an unfamiliar word with an affix. [3 marks]

Total: 9 marks.

Marking guide and model answers
  1. a part at the front [1]; e.g. un-/re- [1]
  2. a part at the end [1]; e.g. -ful/-less [1]
  3. without help [1]
  4. build again [1]
  5. find the root [1]; look at the prefix/suffix meaning [1]; combine the meanings [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. A word part added to the front is a ___.
  2. A word part added to the end is a ___.
  3. The main word part is the ___ word.
  4. Un- and dis- often make an ___.
  5. Careful means full of ___.
  6. Add un- to kind.
  7. Add -less to fear.
  8. Add re- to heat.
  9. Does -ful mean full of?
  10. Does pre- mean after?

Homework

Find five words with prefixes or suffixes in your reading and explain each.

Answer key and marking scheme

Question Expected response Marks
1. A word part added to the front is a ___. prefix 1
2. A word part added to the end is a ___. suffix 1
3. The main word part is the ___ word. root 1
4. Un- and dis- often make an ___. antonym 1
5. Careful means full of ___. care 1
6. Add un- to kind. unkind 1
7. Add -less to fear. fearless 1
8. Add re- to heat. reheat 1
9. Does -ful mean full of? yes 1
10. Does pre- mean after? no 1
Total 10

Independent practice answers. Level 1: 1 prefix; 2 suffix; 3 root; 4 antonym; 5 care. Level 2: 1 unkind; 2 fearless; 3 reheat. Level 3: 1 yes; 2 no; 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 Know common prefixes 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 Know common suffixes 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 Work out meanings 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 Build new 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

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: know common prefixes; know common suffixes; work out meanings; build new words.

Prerequisite knowledge. Multisyllabic decoding.

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. These pages list the standards that cover this topic area; read them alongside the lesson.

Research used to shape this lesson. Common Core L.4.4b and RF.4.3a (use common, grade-appropriate Greek and Latin affixes and roots as clues to the meaning of a word); Cambridge Primary English Stage 4 (word structure). These sources informed the lesson.

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