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Weaving It Together

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UNIT 6<br />

CD 1<br />

Track 11<br />

Chapter<br />

11<br />

The readings and follow-up activities<br />

in this unit are about language and<br />

communication. Chapter 11 discusses<br />

secret languages and codes and the roles<br />

they play in people’s lives. Chapter 12<br />

is about the English language and its<br />

infl uence around the world. Here are some<br />

interesting facts about secret languages<br />

and codes:<br />

• President Thomas Jefferson was very<br />

interested in cryptology. He taught a<br />

secret code to Meriwether Lewis, who<br />

headed the Lewis and Clark Expedition<br />

to explore the western frontier of the<br />

U.S. beginning in 1803, in order to<br />

keep information safe from those who<br />

were opposed to Jefferson’s views on<br />

expansion of the new nation.<br />

• The Spartans of ancient Greece used<br />

a code system for transmitting secret<br />

military information in which the sender<br />

wrote a message on a strip of paper or<br />

leather wound around a cylinder. The<br />

strip was then unwound and sent to the<br />

receiver, who decoded it by winding it<br />

around a cylinder of the very same size.<br />

The two cylinders had to be exactly the<br />

same size or the message was garbled.<br />

46 Unit 6<br />

Language<br />

Keeping <strong>It</strong> Secret<br />

Warm-Up<br />

You may start the lesson in one of these ways:<br />

• Ask students to study the writing on<br />

page 145. Invite them to share anything<br />

they know about these alphabets and<br />

languages. Ask: How are languages that<br />

use an alphabet different from your own<br />

codes?<br />

• Have students work in pairs and try their<br />

hand at developing a simple code, using<br />

either letter exchanges or numbers to<br />

represent letters. Each pair can write a<br />

short message (one sentence) to trade with<br />

another pair for decoding, using a key.<br />

• Ask if students are familiar with the<br />

spoken code language pig Latin. Give<br />

brief instructions (found in reading) and<br />

have pairs try to have a conversation<br />

speaking this way.<br />

Pre-Reading Activity<br />

Ask students to brainstorm as many kinds<br />

of code languages and reasons for using<br />

codes as they can. Make a list on the board<br />

and after they have read the selection,<br />

have the class check off each item found in<br />

the reading.<br />

00238-X_006-073.indd 46 11/12/09 8:40 PM

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