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Section Title Primary information Description and Notes Suggested resources
Lesson Length The expected lesson length will be approximately one hour

Some variation possible.

Assessment Level 1

Students The lesson is suitable for KS3 and KS4 students Since this is a new specification, the lesson is suitable for Year 7 to 9 students and differentiated by outcome  
Overall Focus This lesson takes a brief look at the concept and practice of encryption to protect sensitive data. The lesson will look at the basic way this works with some examples.

Lesson Links: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 39

Key words encryption, These words need to be reinforced throughout the series of lessons  
Assessment identify encryption as a way of making information secure Evidence here will be the students showing a basic understanding of the best methods used. Explore different ways to encrypt information.
Key Questions Some questions to get learners thinking about the topics Some questions and examples will get the students thinking about what the main differences methods and how good or bad these are. What data might we need to protect?  Why is data not secure?
Learning Objectives
  • To understand and describe encrption
  • To explain, with examples, the main processes used
  • To understand how encryption works with simple examples
  • To show an understanding of some of the strengths and weaknesses of encryption

Students should have a basic idea of the need for security in some instances, such as protecting their money.  They should be able to explain the main encryption techniques and give simple examples to illustrate their understanding.

Are the unbreakable?

If you are using the Learning Machine learning system, students can add their comments and material to this site as evidence of their growing understanding.  The site, if used consistently, will show progression via charts of activity and outcomes.
Teaching and Learning Elements
  • an introduction to encryption
  • a look at the main types, with examples
  • Students can break into groups and work on some more detailed aspects of one type
  • Class discussion and evaluation of the wider issues of security
  • Summarize the key points and reinforce the importance of security

In this lesson we need to explore the main types of encryption as well as look at th strengths and weaknesses.

There are various web sites that can be found to illustrate some of the main ideas.
Lesson Structure Possible structure
  1. investigate encryption methods
  2. investigate in detail two types if possible
  3. group work to work on some of their own views and examples
  4. discuss what they have learned and what they can apply
  5. volunteers to share their work and explain how they came to their opinions
  6. highlight next week's focus and issue homework

Encryption image

Some hands on demonstrations might be useful here.  Get one group of students to work on a simple code to see if another group can crack it at all.

Homework Get students to blog about security and using encryption. Students can vary their homework depending on their level of understanding. Get students to document their experience on their portfolio system for assessment


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