Computer Science LearnITWithMrC ⛯ Year 7 Year 8 Year 9 GCSE

## What am I Learning today?

 I am learning how to define what encryption and decryption means I am learning how to describe what a cipher is and how they are used I am learning how to encrypt and decrypt a message I am learning how to explain the importance of 'Keys' in cryptography

## Lesson

1. Set your Learning Objectives to red.

2. We are going to save all of our work into a PowerPoint.

3. #### To download the PowerPoint by clicking on the image below

4. Save your PowerPoint as 'Programming 1'

• Go to the slide in you powerpoint like the image below and try and crack the code
• Also do a little research and see what you can find out about the importance of being able to decrypt a message

• Research and define the word ENCRYPTION
• Research and define the word DECRYPTION
• Go to the slide in you powerpoint like the image below and do a little research.

• Cipher comes from the Arabic sifr, which means "nothing" or "zero."
• Do some research of your own to find out what a cipher means today and what the Roman Caesar has got to do with it.

• Let's see if we can decode a message using the Caesar Cipher wheel

• When you are finished don't forget to save your your powerpoint

• Let's see if we can now encode a message using the Caesar Cipher wheel

• When you are finished don't forget to save your your powerpoint

• ### Summing it all up

Lets look at the learning outcomes and decide which one best describes our current level of understanding :

Tick the one you feel is closest to your level

## Learning Outcomes I need to learn how to define what encryption and decryption means

• I have a basic understanding of how I can define what encryption and decryption means with a little help from my teacher
• I can show my teacher that I can define what encryption and decryption means without their help.
• I can define what encryption and decryption means independently and I can also explain it to others and can complete any extension tasks I am given.