Lesson Plan: Prefixes and Suffixes in Reading

Grade Level

Grades 3–5

Subject

Reading / Vocabulary / Word Study

Time

45–60 minutes

Learning Objectives

Students will be able to:

• Identify common prefixes and suffixes in unfamiliar words.

• Explain how a prefix or suffix changes a word's meaning.

• Use prefixes and suffixes as clues to determine the meaning of unfamiliar words.

• Apply word-part knowledge while reading.

Materials

• Whiteboard and markers

• Prefix and suffix reference chart

• Student notebooks or worksheet

• Word cards

• Highlighters or pencils

• Short reading passage containing words with prefixes and suffixes

Step 1: Warm-Up — What Do You Notice? (5–7 minutes)

Write these words on the board:

• unhappy

• replay

• helpful

• careless

• kindness

Ask students:

• What do you notice about these words?

• Do you recognize any smaller word inside each one?

• What happens when we add letters to the beginning or end of a word?

Explain that some word parts can help readers understand unfamiliar words.

Introduce:

Prefix: A word part added to the beginning of a base word.

Suffix: A word part added to the end of a base word.

Step 2: Direct Instruction — Introduce Common Prefixes (8–10 minutes)

Explain that prefixes can change the meaning of a base word.

Introduce several common prefixes:

Model how to break apart a word.

Example: reread

• re- = again

• read = base word

• reread = read again

Think aloud:

"If I see the word reread in a story, I can use the prefix re- as a clue. It tells me that the character read something again."

Step 3: Direct Instruction — Introduce Common Suffixes (8–10 minutes)

Explain that suffixes are added to the end of words and can change meaning or the form of a word.

Introduce:

Model:

helpful

• help = base word

• -ful = full of

• helpful = full of help or providing help

Then model:

careless

• care = base word

• -less = without

• careless = without care

Step 4: Teacher Modeling — Use Word Parts While Reading (5 minutes)

Display this sentence:

"Marcus reread the directions because he had misunderstood the first step."

Think aloud:

"I know the word read. The prefix re- means again, so reread means read again. I also recognize understand. The prefix mis- means wrongly, so misunderstood means understood incorrectly."

Explain that readers can use familiar word parts as clues when they encounter unfamiliar vocabulary.

Step 5: Guided Practice (10 minutes)

Write the following words on the board:

• unhappy

• preview

• disagree

• helpful

• kindness

• fearless

Work through each word together.

For each word, ask students to identify:

1. The prefix or suffix

2. The base word

3. The meaning of the word

For example:

fearless

• Base word: fear

• Suffix: -less

• Meaning: without fear

Ask students to explain how the suffix helped them determine the meaning.

Step 6: Partner Activity — Word Detective (10 minutes)

Give pairs of students several word cards.

Suggested words:

• reread

• unfair

• misplace

• preview

• hopeful

• joyful

• slowly

• kindness

Students work together to:

1. Identify the prefix or suffix.

2. Circle or underline the word part.

3. Identify the base word.

4. Predict the meaning.

5. Use the word in a sentence.

Encourage students to explain their reasoning to their partners.

Step 7: Independent Practice (8–10 minutes)

Give students a short reading passage containing words with prefixes and suffixes.

Students identify unfamiliar or interesting words and complete a chart:

Remind students to use both the word parts and the surrounding context when determining meaning.

Step 8: Assessment / Exit Ticket (5 minutes)

Write these two words:

unfriendly
carefully

Ask students to:

1. Identify the prefix or suffix.

2. Identify the base word.

3. Explain the meaning of each word.

Example:

unfriendly

• Prefix: un-

• Base word: friendly

• Meaning: not friendly

Use student responses to determine whether additional instruction is needed.

Step 9: Closure (3–5 minutes)

Ask:

• What is a prefix?

• What is a suffix?

• How can word parts help us when we encounter an unfamiliar word?

• Why shouldn't we rely on the prefix or suffix alone?

Emphasize that strong readers combine word-part clues, context clues, and what they already know to figure out unfamiliar words.

Differentiation

Support

• Begin with familiar base words.

• Limit the number of prefixes and suffixes introduced at one time.

• Provide a reference chart.

• Color-code prefixes, base words, and suffixes.

• Practice with the teacher in a small group.

Challenge

• Introduce less common prefixes and suffixes.

• Have students analyze words with both a prefix and suffix.

• Ask students to explain how adding or removing a word part changes meaning.

• Have students find examples in their independent reading.

Extension Activity

Have students become word detectives during independent reading. Ask them to record unfamiliar words containing prefixes or suffixes, break the words into parts, and use the parts and context to determine their meanings.

Success Criteria

Students can:

• Recognize common prefixes and suffixes.

• Identify the base word.

• Explain how a prefix or suffix changes meaning.

• Use word-part knowledge to help determine the meaning of unfamiliar words while reading.

--------------------

Posted: 8/17/26

Education World®