Week 5 - Encryption Objective: - •To identify some of the data which should be kept secure from others. •To learn some of the ways in which data is kept secure. •To learn how unauthorised people can break ciphers and read encrypted data. •To learn about classical encryption techniques. ​Task 1 : - Come up with a list of data which would need to be kept secure. Task 2 : - Your teacher will print out this worksheet for you. They can click here to download it. You should use this file to help solve the message. Click here Task 3: - You are now going to learn a little bit about brute force and the Caesar shift. •https://vimeo.com/145990347 - Watch this video and find out more about the Caesar Shift. ​ Complete the worksheet using the PowerPoint's: - Click here

This is a differentiated assessment which includes old national curriculum levels. You can map these to your new school levels or progress measure quite easily. I've split it into three tasks which are all slightly different. You may use these in any way you like. The idea is that they create a quiz. Some students who are on the red task will need to make sure that they go and try some research in order to understand how a binary search would work in Python. This is why it's a higher level. Students will need to be independent on some of these tasks. I found this useful for my own teaching and it meant that the students who were lower at coding could try the lower task. In terms of challenging students, if I knew that students of higher ability would try and pick the lower tasks, I would allocate them myself. Green (easy) Amber/Orange (medium) Red (hardest) Feel free to modify.

These Python videos will introduce you to the basics of Python 3.3 and will get you started by building lists, reading text, writing text, using strings, using floats, using integers and it will show you how to do conditions using IF. The videos will get you started and can be used by your students to introduce new features. All videos are encoded using MP4 / MPEG 4 List of videos: - *Writing Text *Reading Text *Multiple Lists / Arrays *Single Lists *Conditional / IF Statements *Introductory video *Int / Float / String

A nice little resource made to start people on coding. It introduces common mistakes with coding and also gives them 6 activities to attempt. They have been written based on difficulty for example, it goes from green to red. Activities on this are basic string manipulation but it will be a good first lesson for students to get a taste of Python. Includes inputs, outputs and string manipulation.

This lesson requires prior knowledge of Kodu and gets you thinking about paths. It introduces the path feature to them and you give your students 'tinker' time so that they can explore the tools more. Get the students to think about how they move characters in the game. Introduce automatic movement and show them how to follow other objects. Students complete the worksheet.

Objective: - We’re learning to explain how compression methods are used in computer systems. Outcomes: - Lossy vs Lossless compression – Understanding it’s uses. Run length encoding and dictionary coding for lossless compression Symmetric and asymmetric encryption Different uses of hashing This covers the introduction to Lossy vs Lossless and talks about run length encoding and encryption. Includes a link to a khan academy video on encryption from YouTube * Referenced *

Slide 2 - Introduces the learning objectives. Slide 3 - Explains the difference between client and server-side processing. Slide 4 - Talks about decision making briefly talking about the difference between performance and security. Slide 5 - Advantages of client-side processing. Slide 6 - Advantages of server-side processing. Slide 7 - Link to a video from craig and dave - computer science teachers. I do not own this content and you're not paying for it. It is an external link to a great video resource. Slide 8 - An exam style question. It has no answer sheet to this question. It's more about getting your students to apply knowledge, application and evaluation. Slide 9 - Example exam questions to support the topic. These are attached in the PDF. Made using an exam builder.

A Powerpoint presentation explaining Big O Notation. There are some examples of code and some graphs which help students visualise what is meant by exponential and the complexity of algorithms. This was useful to my year 13 students and hopefully it will help yours.

This lesson will show students how they can use the following techniques with pseudo code. Arrays Concatenation Substring Variables Upper Lower Multidimensional Array There is a worksheet attached with answers and it should give them two lessons to try different code. I hope that this is useful for computer science students

This work sheet is a number of questions including extension activities that will get students to program pseudocode on paper. The first part of the work sheet includes some basic questions as well as some answers on an answer sheet. It should be some good practice for the basics of pseudo code. The extension questinos are more complicated and should be done on a separate sheet or work book as practice for the students.

This is a powerpoint which you can get part of a pack. It teaches you how to do a multidimensional array and shows examples of how they can be used to work out the range. Hope that it is useful to some other teachers.

A year 11 Pseudo Code cheat sheet that shows the candidate how to write a program that uses concatination and it also shows the client how they can do file handling, file writing and how they can append files. It might be a useful print out for candidates to have when learning to write code.

This presentation gives example code and show class diagrams. It teachers students about: Procedural Object-Oriented Declarative Students are also explained to and taught about: - Inheritance Polymorphism Constructors Inheritance Advantages

Objective: - We’re learning to identify different network infrastructures and the encryption involved. During this lesson there are some videos to break up the lesson and teaching notes for you to have a look at. On top of this there are some activities for them to try such as creating their own encryption key. This usually makes the lesson more engaging for the students. Content covered in this lesson: - Topologies Ring Star Bus Mesh Students to draw the network topologies and explain the advantages and disadvantages. Wifi and wifi channels Encryption using the Caesar shift and also comments on brute force. Public and private keys used in encryption.

I have given this task out to some of my sixth form students in the past. It gives them 10 days of challenges. I usually give it out on the 15th and get them to explore their OOP programming using these challenges. This includes an answer sheet.