Go to ail.aspx?id=L396 READ the DIRECTIONS Try Path 1 and Path 2 Then figure out the shortest path...

Go to

http://illuminations.nctm.org/LessonDetail.aspx?id=L396

READ the DIRECTIONS

Try Path 1 and Path 2Then figure out the shortest path to the

pond

Website on piece of paper at your desk

How to program the shortest path

Press “clear” to eraseTo create a new path,

adjust the length by using the blue sliderspress the "forward", "back", or "turn" buttons

to have it placed in the programming areaClick “draw” to make it draw

Cryptography?

Answers to our take home packet Selection of prizes

"Cowards die many times before their deaths; the valiant never taste of death but once."

What numbers occur most frequently in the ciphertext?

Frequency analysis is the process by which the frequency of a letter in an encoded messages is compared with the frequency of letters in English words.

What numbers occur most frequently in the ciphertext?

For instance, the letter E occurs most often in English words, so if the letter W occurs most often in ciphertext, then it is likely that E has been replaced by W.

See Handout

Using the Frequency Table Decode this Message

TFNRIUJ UZV DREP KZDVJ SVWFIV KYVZI UVRKYJ; KYV MRCZREK EVMVI KRJKV FW UVRKY SLK FETV.

Which letter is used the most?

Using the Frequency Table Decode this Message

TFNRIUJ UZV DREP KZDVJ SVWFIV KYVZI UVRKYJ; KYV MRCZREK EVMVI KRJKV FW UVRKY SLK FETV.

Which letter is used the most? The next most used letter?

Realign

A B C D E F G H I J K L M N O P K R S T U V W X Y Z

J K L M N O PQ R S T U V W X Y Z A B C D E F G H I

l "Cowards die many times before their deaths; the valiant never taste of death but once."

Caesar Cipher

Caesar Cipher

English

Coded

Caesar Cipher Starter

Caesar Cipher Starter

Standard Alphabet:A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Caesar Alphabet:

X Y Z A B C D E F G H I J K L M N O P Q R S T U V W

Caesar Cipher Starter answers

Message OnePMFBP PBKA PBZOBQ JBPPXDBP.SPIES SEND SECRET MESSAGES.

Message TwoQEB XOJV FP LK QEB JLSB.THE ARMY IS ON THE MOVE.

Message ThreeQELJXP GBCCBOPLK ABPFDKBA X PRYPQFQRQFLK ZFMEBO.THOMAS JEFFERSON DESIGNED A SUBSTITUTION CIPHER.

Easy Decode

Easy Decode Answers

Can You

Read This

Secret

Message

Intermediate Decode

Intermediate Decode

Message OneUJTUQJ FQQ FWTZSI YMJ BTWQI QNPJ YT XTQAJ UZEEQJX.

Hint: HINT: Look for a pattern that would fit the word "PEOPLE."

UJTUQJ FQQ FWTZSI YMJ BTWQI QNPJ YT XTQAJ UZEEQJX.

Intermediate Decode

Hint: HINT: Look for a pattern that would fit the word "PEOPLE."

UJTUQJ FQQ FWTZSI YMJ BTWQI QNPJ YT XTQAJ UZEEQJX.

Try converting UJTUQJ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

V W X Y Z A B C D E F G H I J K L M N O P Q R S T U FQQ using the same code would = all

Set UJTUQJ = PEOPLE

Intermediate Decode

Try converting FWTZSI

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

K L MN O P Q R S T U V W X Y Z A B C D E F G H I J

Since it doesn’t match, you know the other is correct

Intermediate Decode Answers

Message OneUJTUQJ FQQ FWTZSI YMJ BTWQI QNPJ YT XTQAJ UZEEQJX.

People All Around The World Like To Solve Puzzles.

Intermediate #2

Message TwoMIGY JOTTFYM WUH VY BULX NI MIFPY, VON MIGY ULY YUMS.

HINT: The word "SOME" appears twice in this sentence.

Intermediate #2


HINT: The word "SOME" appears twice in this sentence.


G H I J K L M N O P Q R S T U V W X Y Z A B C D E F Let MIGY= SOME

Intermediate #2


Some Puzzles Can Bb Hard To Solve, But Some Are Easy.

Intermediate #3

Message ThreeQVQ LBH GUVAX GUNG GUVF CHMMYR JNF UNEQ BE RNFL GB QB?

Intermediate #3


HINT: Three words in a row begin with "TH."

Intermediate #3


HINT: Three words in a row begin with "TH.“


N O P Q R S T U V W X Y Z A B C D E F G H I J K L M

Let GU = TH

Intermediate #3


Did You Think That This Puzzle Was Hard Or Easy To Do?

Advanced

Message1. LHKUFXKUL, J LXYIRU ETMMRU KJD NU KJQU TE HV LUOUBJR EJBFL.

2. KEON MEGS FCHS IK HBWRKJ QX BGJKG SB OBFK SB E OBFMWKSK HBWCSQBX.

3. VGT OANRV UZNV WO VGAR UFKKBT AR RWBHADX VGT LNQUVWXNZCR VGT CRTBHTR.

4. IMQC XRK TKOC AMCMWTDIM CBM FMXNRWA KOMA CR TDQ CBM PHZBPGMC.

5. TNUJTH, HKA QAUJ ZRLAFX KAJ JCX SKFW AUXW ZKF JCX UXJJROL.

Advanced: Step 1Decode each sentence

LHKUFXKUL, J LXYIRU ETMMRU KJD NU KJQU TE HV LUOUBJR EJBFL.

The give away is the letter “J” –what are the only stand alone letters/words in the English language I or A



Set J = IA B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Z A B C D E F G H I J K L M N O P Q R S T U V W X Y

Pick something to test. For example does TE = SD make sense?



Set J = AA B C D E F G H I J K L M N O P Q R S T U V W X Y Z

R S T U V WX Y Z A B C D E F G H I J K L M N O PQ

Pick something to test. For example does TE = KV make sense?

Making Interactive PPT and EXCEL

Examples of Excel

In Excel

Secret MessagesPlot the Secret Location

Answers:

Secret messages

Plot the location

See Handouts for Directions

Interactive PPT

Examples of PPT

Remainder of Time Visit

America's Crypto Kids (K-12)National Security Agency (NSA)http://www.nsa.gov/kids/

CIA Kids’ Page (K-12)Central Intelligence Agency (CIA)https://www.cia.gov/kids-page/index.htmlFBI Kids’ PageFederal Bureau of Investigation (FBI)http://www.fbi.gov/fbikids.htm

Future StateU.S. Department of Stateshttp://www.future.state.gov/

Ready KidsDepartment of Homeland Securityhttp://www.ready.gov/kids/home.html

http://www.eschoolnews.tv/http://cryptoclub.math.uic.edu/

shiftcipher/shiftcipher.htm

Go to ail.aspx?id=L396 READ the DIRECTIONS Try Path 1 and Path 2 Then figure out the shortest path...

Documents

Transcript of Go to ail.aspx?id=L396 READ the DIRECTIONS Try Path 1 and Path 2 Then figure out the shortest path...