Vocabulary and Concept Development EDI

1. 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).

2. Learning Objective concept • I will knowcommon roots derived from Greek and Latin and use this knowledge to analyzethe meaning of complex words. skill

3. Activating Prior Knowledge • Have you heard the word structure? • The root struct means “build.” • Can you see the root tract in tractor? • The root tract means “pull, drag.” • Can you see the root tract in the Spanish word “tractor” or in the English word tractor?

4. Concept Development • Root: The fundamental element of a word or form, exclusive of all affixes and inflectional phonetic changes. Bullet proof definition • Root: The root is the part of the word that contains the basic meaning. Student friendly definition

5. Concept Development • struct: From the Latin word struere meaning “to heap up, build.” • tract : From the Latin word tractus meaning “to pull”. Bullet proof definitions • struct: Latin root meaning “measure.” • tract: Latin root meaning “heat.” Student friendly definitions

6. Struct is a Latin root meaning “build.” Tell your partner what struct means.

7. Tract is a Latin root meaning “pull or drag.” Tell your partner what tract means.

8. Read the following Latin roots. tract to pull Latin struct build Latin

9. 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?

10. Skill Development construction contraction destructive extract can’t protractor reconstruct retract structure traction Read these words:

11. to take back or withdraw • tearing down; likely to discourage, ruin destroy, put an end to • Read these definitions / synonyms: • the power to grip or hold to a surface • putting something together, building • a semicircular device used for drawing and measuring angles • to build again, to make over • to pull out or remove by force • The arrangement of the parts of a whole; something built, constructed, organized • A shortening of two words, such as isn’t for “is not”

12. to take back or withdraw • tearing down; likely to discourage, ruin destroy, put an end to • Match the words with the correct definitions or synonyms: construction • the power to grip or hold to a surface contraction • putting something together, building destructive extract • a semicircular device used for drawing and measuring angles protractor • to build again, to make over reconstruct • to pull out or remove by force retract • The arrangement of the parts of a whole; something built, constructed, organized structure • A shortening of two words, such as isn’t for “is not” traction

13. Answer these questions: • What is a root? • Does struct as in strucure mean pull or build? • What does the root tract mean? • What is the root in subtract? • What does the root mean?

14. Guided Practice Identify the roots. • construction • traction • contraction • structure • destructive • retract • extract • reconstruct • protractor

15. Meaning in Context Use the words in the box to fill in the blanks in the following paragraph. structure reconstruct protractor traction destructive destructive After a (1) _______________ windstorm blew down their tree house. Tyrone and Lana decided to (2) _______________ it and make it bigger and better. “Let’s draw the new version before we start building.” said Tyrone pulling out paper and pencil. “I want our new tree house to be an impressive (3) ________________.” “If we put it on the big limb on the right,” said Lana, “we’ll need to know the angle it makes with the trunk.” She pulled out her (4) _______________ to get a general idea of the measure of the angle. “Not that limb,” said Tyrone. “I fell from it last year and broke my leg. At the hospital I was hooked up to cords and weights in (5) _________________ to pull the bone straight so that it would heal well. Let’s put the new tree house on the lower limb.”

16. Closure • A root is – • the part of the word that contains the basic meaning. • struct means – • struct is a Latin root meaning “build” • tract means – • tract is a Latin root meaning “pull or drag”

17. Independent Practice Match the bolded word with the best synonym: • to extract the tooth • a. pull b. fill c. drill • rapid construction • a. carpenters b. destruction c. building • retract a claim • a. review b. take back c. speak • destructive words • a. angry b. long c. excited 5. contraction of a muscle a. loosening b. shortening c. firming

18. Extension In the key word extract, the prefix ex- means “out.” To extract a splinter is to pull it out. Match each word that starts with the prefix ex- with its meaning. __export __ exit __ extend __ exhale b • stretch out • ship out • breathe out • go out d a c