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 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 is the sixth lesson in a sequence of lessons that cover Topic 3: Computers on the Pearson Edexcel GCSE Computer Science course. In this lesson students are reminded about the core model for a computer system, and discuss the need for secondary storage. They are introduced to the history of the development of secondary storage and are asked to compare the functionality, use and benefits and drawbacks of optical, magnetic and solid state storage. Lesson plans are saved in PPTX, PPTS and PPT format. The learning mat (worksheet) and starter activity are saved in PPTX, PPTS and PDF format. Note that PPT files have lost some of the functionality of the animation settings and images.

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 lesson is an introduction to a third unit of work that challenges students to consider the hardware and software on a computer system and how they interact. The unit will follow the GCSE specification for Pearson Edexcel Computer Science, but each lesson can stand independently. In this lesson, students must identify and describe a range of peripherals, and explain the difference between hardware and software. This lesson is suitable for key stage 3 and key stage 4. The teacher’s notes would enable a non-specialist to lead the lesson. It is suitable as a cover lesson to preempt delivery of the more detailed lessons in future. The lesson plan is provided in PPTX, PPT and PPS format. The accompanying learning mat is provided in PPT, PPX and PDF formats.

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 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 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 the penultimate lesson of a unit about data representation, file sizes and compression. In this lesson, students are introduced to ways of measuring file sizes and asked to familiarise themselves with the terms of measurement as well as convert between them. Ultimately, they should be able to write an expression to show the calculation needed to work out the size of a sound or image file. Learning Objective: To understand that data storage is measured in binary multiples. And to be able to construct expressions that calculate file sizes and data capacity requirements. 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 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 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 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 builds on learning from previous lessons related to binary numbers and binary arithmetic. In this lesson, students will consider how a computer can manipulate binary numbers and multiply or divide by powers of 2. This is a skill required for the Edexcel GCSE Computer Science course but the lesson can be adapted for other groups or courses. 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 sixth in a series of lessons on data representation and builds on lesson 5 to look at how computers process negative numbers. There are significant links with maths in this lesson and students need to be clear that adding a negative number is the same as subtracting the positive number. The teacher notes demonstrate two different ways to find the two’s complement of a binary number. The worksheet (learning mat) includes exercises to test students understanding of both processes. 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.

This lesson is the fourth in a sequence of lessons on the topic of data representation. In this lesson students are introduced to the rules surrounding binary addition. There is a learning mat with questions of increasing difficulty. At the end of the lesson, the students are introduced to the idea of an overflow error. 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.