Vocabulary and Concept Development

EDI

Standard: 1.4 Students will identify common roots and affixes derived from Greek and Latin and use this knowledge to analyze the meaning of complex words (e.g., international).

Learning Objective

• I will know common roots derived from Greek and Latin and use this knowledge to analyze the meaning of complex words.

Activating Prior Knowledge

• Have you heard the word basic?

• The root bas means “foundation” or “low part.”

• Can you see the root pos in pose?• The root pos means “placement.”

• Can you see the root pos in the Spanish word “postura” or in the English word posture?

Concept Development• Root : The fundamental element of a word or form, exclusive of all affixes and inflectional phonetic changes.

• Root: The root is the part of the word that contains the basic meaning.

Concept Development• bas: From the Latin word bassus meaning “low” and the Greek word basis meaning “pedestal” or “base.”

pos: From the Latin word positum meaning “to put” or “to place.”

• bas: Latin root meaning “low” and Greek root meaning “base.”

• pos: Latin root meaning “to put” or “to place.”

Tell your partner

what bas means.

Bas is a Latin root meaning “low” and a Greek root meaning

“pedestal” or “base.”

Tell your partner

what pos means.

Pos is a Latin root meaning

“to put” or “to place.”

Read the following Latin roots.

baslow Latin

posto put, to placeLatin

baspedestal, base Greek

Importance

• Have you ever been confused about a word and have not been able to figure out its meaning?

• Have you ever had to use knowledge of word meaning to figure out the meaning of a new or difficult word?

Skill Development• Read these words:

basement

basis

composition

bass

dispose

exposure

position

positive

• Read these definitions / synonyms:

to get rid of throw away; to take care of or settle

the act or result of making something in writing, art, or music

the lowest floor, partly or fully below the ground

having deep, low tones

the foundation, the part that supports something

the result of being unprotected outside; the act or result of putting in open view

sure, certain, definite; good, favorable, constructive

place or placement; point of view, way of thinking; job, rank, office

• Match the words with the correct definitions or synonyms:

basement

basis

composition

bass

dispose

exposure

position

positive

to get rid of throw away; to take care of or settle

the act or result of making something in writing, art, or music

the lowest floor, partly or fully below the ground

having deep, low tones

the foundation, the part that supports something

the result of being unprotected outside; the act or result of putting in open view

sure, certain, definite; good, favorable, constructive

place or placement; point of view, way of thinking; job, rank, office

Answer these questions:

1. What is a root?2. Does bas as in basic mean “low” or “to

place”?3. What does the root pos mean?4. What is the root in posture?5. What does the root mean?

Identify the roots.

• positive• basement• position• basis• exposure• bass• dispose• composition

Guided Practice

Meaning in ContextUse the words in the box to fill in the blanks in the following paragraph.

positive position basement dispose

When Mom says it’s time for spring housecleaning, she means the whole house from the attic to the (1) __________. She loves to have everything fresh and clean after winter. She takes the (2) ________________ that everyone in the family should help. Last week she handed me a pail of soapy water. When I frowned, she said, “Look on the (3) _________ side of things; when we’re through, we won’t need to work this hard until the fall.” In addition, she made me clean out my closet and (4) _____________ of all the clothes that I’d outgrown. I. too, like everything fresh and organized, but I’ll be glad when spring housecleaning is over.

basement

Closure• A root is –

• the part of the word that contains the basic meaning.

• bas means – • bas is a Latin root meaning “low” and a Greek root meaning “pedestal” or “base”

• pos means – • pos is a Latin root meaning “to put” or “to place”

Independent Practice

Match the bolded word with the best synonym:

1. her position in the linea. place b. lead c. position

2. the basis for his ideaa. power b. foundation c. construction

3. composition of the painta. makeup b. placement c. odor

4. the bass druma. chorus b. with low notes c. with high notes

5. hurt by exposurea. being hidden b. being bored c. being revealed

ExtensionThe key word exposure has three meaningful parts: ex- which can mean “out,” pos which can mean “put,” and -ure which can mean “the result of being.” So, one of the meanings of exposure is “the result of being put out (outside).”

Use the words that end in the suffix –ure to match the following words with their definitions.

1. __mixture2. __ pleasure3. __ signature4. __ rupture5. __ fracture

a. the result of signing your nameb. the result of mixingc. the result of being pleasedd. the result of breakinge. the result of bursting

b

c

a

e

d