5th GRADE
WE ARE DIGITAL CITIZENS
LESSON 4: ENCRYPTION
LESSON MISSION
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VIDEO TIMEWhat is an encryption code and how are they used to provide internet security? Let's watch the video below together as a class. Do not click on the video. You can watch it on your own computer at home.
THE SPY WAR RACENow we are going to play a game called the Spy War Race. In this race you will be divided into groups. Each group will represent a nation in the following scenario.
The world is on the brink of World War III. All nations are on edge. Each nation sends their spies out to other nations so that they can learn whether or not these countries are allies or enemies.
Your national spies intercept three encrypted messages and bring it back to you. Each nation will race against the other nations to decrypt each message to find out the secret information first.
The race begins when I will hand each nation an envelope with the first encrypted message. When I say go, your nation will open the envelope and work to determine how the encrypted message is coded by figuring out the system that was used to encrypt the message. Then, you will translate the message. Remember, it is important for your nation to work quickly and quietly to uncover the code and translate the message. You do not want another team to hear what you discovered. When you believe your nation has succeeded in decrypting the first message, bring the translation to me. If it is correct, I will hand you the second encrypted code. If it is incorrect, I will shake my head no, and you will have to go back and try again. Remember, there will be a total of three encrypted messages. The first team to decipher all 3 encryption codes and correctly translate all 3 messages will win the Spy War Race. |
TOOL BOX
TERMS TO KNOW
encryption: the process of scrambling or changing a message to make it secret
decryption: the process of unscrambling an encrypted or secret message, so that it can be read code: replacing words, phrases, or sentences with groups of letters or numbers cipher: an algorithm or system that substitutes each letter with a certain number of steps down the alphabet key: the number used in a cipher or the coded system used to encrypt a message symmetric encryption: when the sender and receiver share the same key to unscramble a message asymmetric keys: using a public key that can be exchanged with anybody and a private key that is not shared public key: a key used to encrypt data that can be used by anyone to create a secret message private key: a key that is used to unlock an encrypted message |
QUIZ TIME
Click on the link below to take the exit ticket quiz. If you make a 100%, you have a WHOPPER of a brain! Come and see me for a little treat.
MISSION ACCOMPLISHED
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CONGRATULATIONS!
You accomplished your mission!
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Want to know more about how encryption works? Click on the icon below to learn more!
