1. Roots and Affixes
How words are created

2. What will we do today? Objective and Essential Questions
Review Expectations
Watch a short video
Create a root/affix chart

3. Objective:
I can use roots and affixes to determine the meaning of unknown words.

4. Essential Questions: What is a root word? What is a prefix?
What is a suffix?

5. Expectations: Follow the classroom rules. Stay on task.
Keep your hands out of your backpacks.
Listen in learning position.
Be respectful to me and to your classmates.

6. Video on Root Words

7. Vocabulary
English vocabulary include short words like the article a as well as longer word such as inextricably and denunciation.
Short word such as speak and solve are called base words
Base words cannot be reduced to smaller parts.
Other words can be added to them to produce longer words with various meanings.

8. Word Parts There are two kinds of word parts: roots and affixes.
A root is a word part that comes from another language, such as Greek or Latin.
An affix is a word part that can be attached to either a root or a base word to create a new word.

9. Affixes
Affixes can be divided into two categories: prefixes (appear at the beginning of words) and suffixes (appear at the end of words).
Common Prefixes
Common Suffixes
Bi two
-al adjectival suffix
Anti against
-fy verb suffix
Inter between
-ic adjectival suffix
Pre before
-ion noun suffix
Super above
-ism noun suffix
Trans across
-ize verb suffix
Dis not
-ous adjectival suffix

10. Check it out Roots Affixes Latin Root: tang, meaning “touch”
Prefix: in-, meaning “not”
Greek Root: chrome, meaning “color”
Suffix: -ible, meaing “able to”

11. Meaning
The meaning of a word is related to the meaning of its word parts.
To unlock the meaning of an unfamiliar word, break the word down into its component parts; then think about the meaning of the word’s affixes and root.

12. Apply
For example one could analyze the word intangible, using the chart shown previously.
First break the word into its parts:
PREFIX ROOT SUFFIX ENGLISH WORD
In tang ible = intangible
Tang is a latin roots meaning “touch”
In is a prefix meaning “not”
-ible is a suffix meaning “able to”

13. Word Families
A group of English words may be derived from the same word part of root. Such a group is called a word family.
You can use this knowledge to help you determine the meaning of unknown words.
Try this out:
Shared roots: solo, solitary, solitude
Root: sol= ?

14. Answer: Alone, can you think of other words in the family?
Solitare
Soloist
Based on your knowledge of the root and the meaning of other words in the same family, try to define the meaning of the above words.
Solitare- a card game played by one person
Soloist- one who performs alone

15. Try one: Words: Diminish Diminutive Minimum
What do these words have in common?
Which words do you know?
What do you think the meaning of the root is?

16. Word Family Practice Questions:
Word family: ethnicity, ethnic, ethnographer Root: ethn Meaning:
Ocean
Nation
Hesitation

17. Word Family Practice Questions:
Word family: maniac, maniacal Root: mania Meaning:
Education
Sanitation
Madness

18. Word Family Practice Questions:
Word family: epidermis, dermatology Root: derm Meaning:
Skin
Body
Mind

19. Word Family Practice Questions:
Word Family: laboratory, labor Root: lab Meaning:
Work
Good
Weak

20. Let’s see what you know:
Divide and indivisible are members of the same word family. Which root so they share?
A. –vis B. -visible C. -div-
What is the meaning of this root?
A. separate B. shrink C. junk
What is another member of the same word family?
A. December B. dividend C. invisible

21. Closure:
Turn to your partner and explain the definitions of a root word, prefix, and suffix.
Be prepared to share your answer with the class!