This is the third lesson in a series of lessons about ciphers and encryption. In this lesson, students consider why a simple cipher such as the Caesar cipher is inappropriate for internet encryption and look at a more complex cipher method. They are also introduced to the world of code breakers during World War II and the work of Alan Turing.

This lesson is the first of a sequence of lessons that challenge students to consider how plain English can be coded or ciphered. It builds on understanding of what Morse Code is used for and students have to cipher and decipher messages themselves. it is an introduction to a unit of work on ciphers and encryption.

This lesson is close to the end of the unit of work on data presentation but can be run as a standalone lesson. In this lesson students are introduced to different types of compression and investigate the reasons why files need to be compressed for efficient computer use. Learning Mat (LM) Worksheet is supplied as PPT, PPTX and PDF formats. Lesson Plan (LP) is supplied as PPT, PPTX and PPT Slideshow. Note that PPT files may lose some functionality.

This lesson is a stand alone lesson that introduces students to the concept of hexadecimal and asks them to develop skills in converting between binary and denary and hexadecimal. Students will require knowledge of and skills with converting between binary and denary. It also starts to introduce the idea of colour and images being represented by computer code. It touches on high and low level programming languages. Learning Mat (LM) Worksheet is supplied as PPT, PPTX and PDF formats. Lesson Plan (LP) is supplied as PPT, PPTX and PPT Slideshow. Note that PPT files may lose some functionality.

This lesson also covers material needed for learning about networks and cyber security, but also fits nicely in a unit of work about data representation. In this lesson, students are given the opportunity to reflect on what encryption is and why it is needed as well as practice skills with a Caesar Cipher. There are a range of activities that allow students to read out loud, discuss with other pupils and communicate learning in written activities. There are practical puzzles to investigate encryption algorithms, and a careers guidance discussion about being an ethical hacker. Learning Mat (LM) Worksheet is supplied as PPT, PPTX and PDF formats. Lesson Plan (LP) is supplied as PPT, PPTX and PPT Slideshow. Note that PPT files may lose some functionality.

This lesson draws the whole unit of work on Data Representation to a close. Start with providing students the opportunity to complete the assessment task under test conditions then when work is marked, use the lesson plan (LP) is an opportunity for Dedicated Improvement and Reflection Time (DIRT). Students will understand the correct answers to the questions on the assessment, and then complete 3 targets set by the teacher in their feedback. There is a marksheet (XLSX) to record student scores and to analyse class performance. Learning Mat (LM) Worksheet is supplied as PPT, PPTX and PDF formats. Lesson Plan (LP) is supplied as PPT, PPTX and PPT Slideshow. Note that PPT files may lose some functionality.

This lesson is the 8th in a series of lessons that helps students understand the fundamentals of binary numbers and binary arithmetic. This lesson is appropriate for the Edexcel GCSE Computer Science course and for students studying for higher grades. It builds on the previous lesson where students compared binary multiplication with denary multiplication. This lesson demonstrates one method for working with signed integers represented in binary format. Learning Mat (LM) Worksheet is supplied as PPT, PPTX and PDF formats. Lesson Plan (LP) is supplied as PPT, PPTX and PPT Slideshow. Note that PPT files may lose some functionality.

This lesson is the fifth in a sequence of lessons and looks at processor performance when related to clock speed, number of cores and bus speed. There are a variety of activities, but the main demonstrate phase considers the language of exams and helps students to understand how much to write in exam style questions. The learning mat (worksheet) is provided in PPTX, PPT and PDF formats. The lesson plan is provided in PPTX, PPTS, PPT formats, though the user should note that some animation and image features lose some functionality in PPT format.

This lesson is the 12th in a sequence of lessons that looks at how hardware and software are integrated on a computer system. This lesson looks at how programs written as high level programming languages can be translated into object or machine code. The lesson plan is provided in PPTX, PPTS and PPT formats, while the learning mat is available as PDF, PPTX and PPT files.

This is the 7th lesson in a sequence of lessons covering Topic 3: computers of the Pearson Edexcel GCSE Computer Science (2020) course. The lesson introduces students to different devices that are computer controlled, and defines the term ‘embedded processor’. There are a range of activities that allow students to compare embedded and general purpose computer systems, and investigate the hardware used. This lesson includes a ‘matching pairs’ card game for the bell work activity. Learning mat and starter activity are provided as PDF, PPTX and PPT format. The lesson plan is saved as PPTX, PPT and PPTS formats. Note that some features are lost in PPT formats.

This lesson plan forms part of a unit of work to develop student’s understanding of how data is represented on a computer. This lesson concerns the development of character sets, shares information about ASCII and Unicode and the associated learning mat encourages students to consider the fact that emojis can also form part of a character set. Learning Mat (LM) Worksheet is supplied as PPT, PPTX and PDF formats. Lesson Plan (LP) is supplied as PPT, PPTX and PPT Slideshow. Note that PPT files may lose some functionality.

This lesson builds on lesson 17, and asks students to convert from hexadecimal to both binary and denary. The learning mat includes exercises in both and includes some questions in context. The lesson plan is fully editable in PowerPoint and is broken into a 6-part lesson with recall and self-assessment activities. Learning Mat (LM) Worksheet is supplied as PPT, PPTX and PDF formats. Lesson Plan (LP) is supplied as PPT, PPTX and PPT Slideshow. Note that PPT files may lose some functionality.

This is lesson 5 in the sequences of lessons on data representation – part of the computer science GCSE course, although it can be adapted for a key stage 3 computing class that is being prepared for GCSE. This lesson introduces one way of showing negative numbers in binary format, and leads students to understand why this format is not good enough for computer programming. Learning Mat (LM) Worksheet is supplied as PPT, PPTX and PDF formats. Lesson Plan (LP) is supplied as PPT, PPTX and PPT Slideshow. Note that PPT files may lose some functionality.

Second in a sequence of lessons that ask students to consider how data is stored and manipulated on a computer under the topic of data representation. Fully resourced lesson and detailed lesson plan including numeracy and literacy links. Range of activities. No computer needed. Learning Mat (LM) Worksheet is supplied as PPT, PPTX and PDF formats. Lesson Plan (LP) is supplied as PPT, PPTX and PPT Slideshow. Note that PPT files may lose some functionality.

This lesson forms part of a unit of work that enables students to understand how text, images and sound are stored and edited on a computer. This lesson focuses on sound recordings and asks students to understand how a digital sound recording can never be as high quality as original sound, and tests them on how the sound recording can be improved in quality. Learning Mat (LM) Worksheet is supplied as PPT, PPTX and PDF formats. Lesson Plan (LP) is supplied as PPT, PPTX and PPT Slideshow. Note that PPT files may lose some functionality.

This lesson is a stand alone lesson that introduces students to the concept of hexadecimal and asks them to develop skills in converting between binary and denary and hexadecimal. Students will require knowledge of and skills with converting between binary and denary. It also starts to introduce the idea of colour and images being represented by computer code. It touches on high and low level programming languages. Learning Mat (LM) Worksheet is supplied as PPT, PPTX and PDF formats. Lesson Plan (LP) is supplied as PPT, PPTX and PPT Slideshow. Note that PPT files may lose some functionality.

This lesson draws the whole unit to a close. During the unit students will have studied the different hardware and software components that make up a computer system. You should use one lesson to set the assessment task and then use this lesson as an opportunity for Dedicated Improvement and Reflection Time (DIRT). Students will understand the correct answers to the questions on the assessment, and then complete 3 targets set by the teacher in their feedback. The lesson plan is provided in .PPT, .PPTS and .PPTX format, while the learning mat or assessment sheet is provided as PPTX, PPS and PDF.

This lesson builds on learning from the introductory lesson for this unit. In the previous lesson, students were asked to complete a homework research activity, so if you have not run this lesson you will need to delete or change this activity. The content of this lesson is a core part of the learning for the GCSE computer science course and asks students to understand that while the computer is running a program, the data and instructions need to be stored / held. You can extend students to understand that this disappears when the program stops or the computer is switched off. This lesson has been created with the Pearson Edexcel specification in mind, but is appropriate for other exam boards. Lesson plans are provided in PPTX, PPT and PPS format, while learning mats are provided in PPTX, PPT and PDF formats.

This is a busy lesson and is fourth in a sequence of lessons that consider how computer systems integrate hardware and software. In this lesson, students consider what happens in the CPU during the fetch-decode-execute process. This lesson may need to be differentiated for some classes. There is an opportunity to consider how the registers work using the little man computer model using an online model. The lesson plan is provided in PPTX, PPTS and PPT format although some functionality (such as the video screen grab) is lost in PPT format so the screen grab is also provided separately. The worksheet (learning mat) is provided in PPTX, PPT and PDF formats.

This lesson is the third in a sequence of lessons that exposes students to activities that will help them understand how the different components in a computer system interact and communicate with each other. This lesson focuses on the different types of internal main memory in a computer, that are used to start up and keep the computer running. Students learn about the differences in functionality and purpose of ROM, RAM and cache memory. The lesson plan is provided in PPTX, PPTS and PPT format, though some functionality in the PPT file may be lost. The worksheet (learning mat) is provided in PPTX, PPT and PDF format.