This lesson teaches students about how and why encryption is used. It has been specially created for the OCR GCSE Computer Science (J277) course, meaning there is no irrelevant content from other exam boards. This resource consists of a PowerPoint presentation, a worksheet with answers, custom-made exam-styled questions with a mark scheme, and a full lesson plan. See the video and the preview image to see what is included! Feedback has been considered when creating and updating this resource to ensure it is appealing, engaging, and challenging. This resource will be updated to ensure it is (one of) the best! Duration: 1 Lesson This resource is designed to cover: How encryption is used to secure data. ⠀ Other complete lessons in Unit 1.3: Types of Networks Network Performance Network Hardware The Internet Network Topologies Encryption (Current - Free) Standards and Network Protocols Network Connections

This teaches students how sound is is sampled and stored in a digital form along with what is sample rate, bit depth, and duration of sound files. It has been specially created for the OCR GCSE Computer Science (J277) course, meaning there is no irrelevant content from other exam boards. This resource consists of a PowerPoint presentation, a worksheet with answers, custom exam-styled questions with a mark scheme, and a full lesson plan. See the video and the preview image to see what is included! Feedback has been considered when creating and updating this resource to ensure it is appealing, engaging, and challenging. This resource will be updated to ensure it is (one of) the best! Duration: 1 Lesson This resource is designed to cover: Analogue waves. How sound is sampled and store in a digital form on a computer. Factors affecting sound quality: sample rate and bit depth. Calculating the size of sound files. ⠀ Other complete lessons in Unit 1.2: RAM, ROM, and Virtual Memory (Primary Storage) Units of Storage Secondary Storage Binary Crash Course Representing Images Representing Sound (Current) Representing Characters Compression

This lesson is about Embedded Systems and General-Purpose Computers and has been specially created for the OCR GCSE Computer Science (J277) course, meaning there is no irrelevant content from other exam boards. This resource consists of a PowerPoint presentation, a worksheet with an answer sheet, custom exam-styled questions with a mark scheme, and a full lesson plan. See the video and the preview image to see what is included! Feedback has been considered when creating and updating this resource to ensure it is appealing, engaging, and challenging. This resource will be updated to ensure it is (one of) the best! Duration: 1 Lesson This resource is designed to cover: Purpose and Characteristics of Embedded Systems Differences when compared with General-Purpose Computers. Wide range of Examples. ⠀ Other complete lessons in Unit 1.1: Purpose of the CPU (Free) Von Neumann Architecture CPU Performance Embedded Systems (Current - Free)

This lesson is about the Purpose of the CPU, or processor, inside the computer and has been specially created for the OCR GCSE Computer Science (J277) course, meaning there is no irrelevant content from other exam boards. This resource consists of a PowerPoint presentation, a worksheet with an answer sheet, custom exam-styled questions with a mark scheme, and a full lesson plan. See the video and the preview image to see what is included! Feedback has been considered when creating and updating this resource to ensure it is appealing, engaging, and challenging. This resource will be updated to ensure it is (one of) the best! Duration: 1 Lesson This lesson teaches students about: Input and Output Devices Hardware and Software Purpose of the CPU Fetch-Decode-Execute Cycle (This is briefly covered and sets the foundations to a complex content, it will be fully covered in the Von Neumann architecture lesson). ⠀ I hope you enjoy using this lesson as much as I enjoyed making it. Other complete lessons in Unit 1.1: Purpose of the CPU (Current - Free) Von Neumann Architecture CPU Performance Embedded Systems (Free)

This lesson is about units of data storage and is designed to teach students about bits and how units are used to simplify file sizes. It has been specially created for the OCR GCSE Computer Science (J277) course, meaning there is no irrelevant content from other exam boards. This resource consists of a PowerPoint presentation, a worksheet with an answer sheet, custom exam-styled questions with a mark scheme, and a full lesson plan. See the video and the preview image to see what is included! Feedback has been considered when creating and updating this resource to ensure it is appealing, engaging, and challenging. This resource will be updated to ensure it is (one of) the best! Duration: 1 Lesson This resource is designed to cover: Units of data storage. Moving between different data units. Calculating required storage capacity for files. Why data needs to be converted to binary format. ⠀ Other complete lessons in Unit 1.2: RAM, ROM, and Virtual Memory (Primary Storage) Units of Storage (Current) Secondary Storage Binary Crash Course Representing Images Representing Sound Representing Characters Compression

This complete lesson teaches students about network hardware: Wireless Access Points WAP, Network Interface Controllers NIC, Switches, Routers, and Transmission Media. It has been specially created for the OCR GCSE Computer Science (J277) course, meaning there is no irrelevant content from other exam boards. This resource consists of a PowerPoint presentation, a worksheet with answers, custom-made exam-styled questions with a mark scheme, and a full lesson plan. See the video and the preview image to see what is included! Feedback has been considered when creating and updating this resource to ensure it is appealing, engaging, and challenging. This resource will be updated to ensure it is (one of) the best! Duration: 1-2 Lessons This resource is designed to cover: Hardware needed to connect devices to a Local Area Network (LAN): Wireless Access Points Network Interface Controllers Routers Switches Transmission Media: Ethernet Cables Fibre Optics Wi-Fi Function and purpose of each piece of hardware. ⠀ Other complete lessons in Unit 1.3: Types of Networks Network Performance Network Hardware (Current) The Internet Network Topologies Encryption (Free) Standards and Network Protocols Network Connections

This activity aims to challenge students’ Python programming skills in using and creating functions and procedures. This resource is suitable for students with different abilities, with the source code being available for each challenge. You can easily reuse and adapt our top-quality teaching material to fit your unique teaching style. This activity is suitable for classroom use or for self-study at home, and allows for students to develop their problem-solving skills.   █▀▀ █▀▀ ▄▀█ ▀█▀ █░█ █▀█ █▀▀ █▀ █▀░ ██▄ █▀█ ░█░ █▄█ █▀▄ ██▄ ▄█ Compliant with the AQA/OCR GCSE Computer Science specifications 8525/J277. This resource contains: 12 challenges provide students with an invaluable opportunity to sharpen their coding skills and problem-solving abilities through using functions and procedures. Source code answers allowing for students to self-evaluate their work or explore a different way of solving the problem.   Other useful resources from us: Arrays / Lists - Python Programming Challenges Random Numbers - Python Programming Challenges Operating Systems (OS) - Complete Lesson (OCR GCSE J277)   █▀▀ █▀█ █ █▀▄▀█ █▀ █▀█ █▄░█ █▄▄ █▀▄ █ █░▀░█ ▄█ █▄█ █░▀█   █░█░█ █ ▀█ ▄▀█ █▀█ █▀▄ ▀▄▀▄▀ █ █▄ █▀█ █▀▄ █▄▀ Feel free to leave any feedback in the review section below! :)

This activity aims to challenge students’ Python programming skills in using lists / arrays, and manipulating them. This resource is suitable for students with different abilities, with the source code being available for each challenge. You can easily reuse and adapt our top-quality teaching material to fit your unique teaching style. This activity is suitable for classroom use or for self-study at home, and allows for students to develop their problem-solving skills.   █▀▀ █▀▀ ▄▀█ ▀█▀ █░█ █▀█ █▀▀ █▀ █▀░ ██▄ █▀█ ░█░ █▄█ █▀▄ ██▄ ▄█ Compliant with the AQA/OCR GCSE Computer Science specifications 8525/J277. This resource contains: 12 challenges provide students with an invaluable opportunity to sharpen their coding skills and problem-solving abilities through using arrays / lists. Source code answers allowing for students to self-evaluate their work or explore a different way of solving the problem.   Other useful resources from us: File Handling - Python Programming Challenges Random Numbers - Python Programming Challenges Laws and Legislation - Complete Lesson (OCR GCSE J277)   █▀▀ █▀█ █ █▀▄▀█ █▀ █▀█ █▄░█ █▄▄ █▀▄ █ █░▀░█ ▄█ █▄█ █░▀█   █░█░█ █ ▀█ ▄▀█ █▀█ █▀▄ ▀▄▀▄▀ █ █▄ █▀█ █▀▄ █▄▀ Feel free to leave any feedback in the review section below! :)

This activity aims to challenge students’ Python programming skills in selections (if statements). This resource is suitable for students with different abilities, with the source code being available for each challenge. You can easily reuse and adapt our top-quality teaching material to fit your unique teaching style. This activity is suitable for classroom use or for self-study at home, and allows for students to develop their problem-solving skills.   █▀▀ █▀▀ ▄▀█ ▀█▀ █░█ █▀█ █▀▀ █▀ █▀░ ██▄ █▀█ ░█░ █▄█ █▀▄ ██▄ ▄█ Compliant with the AQA/OCR GCSE Computer Science specifications 8525/J277. This resource contains: 17 challenges provide students with an invaluable opportunity to sharpen their coding skills and problem-solving abilities Source code answers allowing for students to self-evaluate their work or explore a different way of solving the problem.   Other useful resources from us: String Manipulation - Python Programming Challenges Random Numbers - Python Programming Challenges Representing Sound - Complete Lesson (OCR GCSE J277)   █▀▀ █▀█ █ █▀▄▀█ █▀ █▀█ █▄░█ █▄▄ █▀▄ █ █░▀░█ ▄█ █▄█ █░▀█   █░█░█ █ ▀█ ▄▀█ █▀█ █▀▄ ▀▄▀▄▀ █ █▄ █▀█ █▀▄ █▄▀ Feel free to leave any feedback in the review section below! :)

This activity aims to challenge students’ Python programming skills in using iterations / loops. This resource is suitable for students with different abilities, with the source code being available for each challenge. You can easily reuse and adapt our top-quality teaching material to fit your unique teaching style. This activity is suitable for classroom use or for self-study at home, and allows for students to develop their problem-solving skills.   █▀▀ █▀▀ ▄▀█ ▀█▀ █░█ █▀█ █▀▀ █▀ █▀░ ██▄ █▀█ ░█░ █▄█ █▀▄ ██▄ ▄█ Compliant with the AQA/OCR GCSE Computer Science specifications 8525/J277. This resource contains: 12 challenges provide students with an invaluable opportunity to sharpen their coding skills and problem-solving abilities through using iterations / loops. Source code answers allowing for students to self-evaluate their work or explore a different way of solving the problem.   Other useful resources from us: File Handling - Python Programming Challenges String Manipulation - Python Programming Challenges Software Licenses - Complete Lesson (OCR GCSE J277)   █▀▀ █▀█ █ █▀▄▀█ █▀ █▀█ █▄░█ █▄▄ █▀▄ █ █░▀░█ ▄█ █▄█ █░▀█   █░█░█ █ ▀█ ▄▀█ █▀█ █▀▄ ▀▄▀▄▀ █ █▄ █▀█ █▀▄ █▄▀ Feel free to leave any feedback in the review section below! :)

This resource covers converting between Binary and Denary (and vice versa), Binary Addition, Binary Shifts, and converting between Hexadecimal and Binary/Denary (and vice versa). It has been specially created for the OCR GCSE Computer Science (J277) course, meaning there is no irrelevant content from other exam boards. This resource consists of a PowerPoint presentation, a long worksheet with an answer sheet, custom exam-styled questions with a mark scheme, and a full lesson plan. See the video and the preview image to see what is included! Feedback has been considered when creating and updating this resource to ensure it is appealing, engaging, and challenging. This resource will be updated to ensure it is (one of) the best! Duration: 3-4 Lessons This resource is designed to cover: Binary to Denary up to 8 Bits (and vice versa). Most Significant Bit and Least Significant Bit. Adding two Binary Numbers with an explanation about Binary Overflow. Two-digit Hexadecimal to Binary/Denary. Understanding and carrying out Binary Shifts. ⠀ Other complete lessons in Unit 1.2: RAM, ROM, and Virtual Memory (Primary Storage) Units of Storage Secondary Storage Binary Crash Course (Current) Representing Images Representing Sound Representing Characters Compression

This teaches students about lossy and lossless compression, along with the need for compression, and the effect on files. It has been specially created for the OCR GCSE Computer Science (J277) course, meaning there is no irrelevant content from other exam boards. This resource consists of a PowerPoint presentation, a worksheet with answers, custom exam-styled questions with a mark scheme, and a full lesson plan. See the video and the preview image to see what is included! Feedback has been considered when creating and updating this resource to ensure it is appealing, engaging, and challenging. This resource will be updated to ensure it is (one of) the best! Duration: 1 Lesson This resource is designed to cover: Why compression is used. Lossy and Lossless compression. Scenarios where each type of compression may be used. Advantages and disadvantages of each type of compression - there is a worksheet task designed for students to obtain this information from the presentation. Effects on different types of files. ⠀ Other complete lessons in Unit 1.2: RAM, ROM, and Virtual Memory (Primary Storage) Units of Storage Secondary Storage Binary Crash Course Representing Images Representing Sound Representing Characters Compression (Current)

This is designed to teach students how images are represented in computers. It provides an overview on bitmaps and vectors, and goes into detail on how pixels are represented. It has been specially created for the OCR GCSE Computer Science (J277) course, meaning there is no irrelevant content from other exam boards. This resource consists of a PowerPoint presentation, a worksheet with answers, custom exam-styled questions with a mark scheme, and a full lesson plan. See the video and the preview image to see what is included! Feedback has been considered when creating and updating this resource to ensure it is appealing, engaging, and challenging. This resource will be updated to ensure it is (one of) the best! Duration: 1 Lesson This resource is designed to cover: How an image is represented using pixels. How each pixel is represented. Effect of colour depth and resolution on images. Metadata. Calculating the size of an image file. ⠀ Other complete lessons in Unit 1.2: RAM, ROM, and Virtual Memory (Primary Storage) Units of Storage Secondary Storage Binary Crash Course Representing Images (Current) Representing Sound Representing Characters Compression

This is designed to teach how characters are represented using binary in computers, and character sets: ASCII, Extended ASCII and Unicode. It has been specially created for the OCR GCSE Computer Science (J277) course, meaning there is no irrelevant content from other exam boards. This resource consists of a PowerPoint presentation, a worksheet with answers, custom exam-styled questions with a mark scheme, and a full lesson plan. See the video and the preview image to see what is included! Feedback has been considered when creating and updating this resource to ensure it is appealing, engaging, and challenging. This resource will be updated to ensure it is (one of) the best! Duration: 1 Lesson This resource is designed to cover: How characters are represented using binary codes. Character sets: ASCII, Extended ASCII, Unicode. Character limit due to how many bits are used to represent a character. Logical order of characters in character sets. ⠀ Other complete lessons in Unit 1.2: RAM, ROM, and Virtual Memory (Primary Storage) Units of Storage Secondary Storage Binary Crash Course Representing Images Representing Sound Representing Characters (Current) Compression

Generate an unlimited amount of printable binary worksheets for your students. The following worksheets can be generated: denary to binary (and back), hexadecimal to denary (and back), hexadecimal to binary (and back), binary shifts, and binary addition. In addition, a separate answer sheet is generated. These worksheets can be used when teaching OCR GCSE Computer Science J277. See the video to see how the worksheets are generated! Situations where this resource can be useful: Starter activity Exam practice Homework

This resource teaches students about the performance of computer networks - network latency, transmission errors, bandwidth, type of network traffic, and the number of connected devices. It has been specially created for the OCR GCSE Computer Science (J277) course, meaning there is no irrelevant content from other exam boards. This resource consists of a PowerPoint presentation, a worksheet with answers, custom-made exam-styled questions with a mark scheme, and a full lesson plan. See the video and the preview image to see what is included! Feedback has been considered when creating and updating this resource to ensure it is appealing, engaging, and challenging. This resource will be updated to ensure it is (one of) the best! Duration: 1-2 Lessons This resource is designed to cover: Factors that affect the performance of a computer network: Network Latency Transmission Errors Bandwidth Type of Network Traffic Number of Connected Devices ⠀ Other complete lessons in Unit 1.3: Types of Networks Network Performance (Current) Network Hardware The Internet Network Topologies Encryption (Free) Standards and Network Protocols Network Connections

This teaches students about Local Area Networks LAN and Wide Area Networks WAN, as well as the role of computers in the Client-Server and Peer-to-Peer models. It has been specially created for the OCR GCSE Computer Science (J277) course, meaning there is no irrelevant content from other exam boards. This resource consists of a PowerPoint presentation, two worksheets with answers, custom exam-styled questions with a mark scheme, and a full lesson plan. See the video and the preview image to see what is included! Feedback has been considered when creating and updating this resource to ensure it is appealing, engaging, and challenging. This resource will be updated to ensure it is (one of) the best! Duration: 2-3 Lessons This resource is designed to cover: Local Area Networks and common examples. Wide Area Networks and common examples. Client-Server and Peer-to-Peer Network Model. Role of computers in the Client-Server and Peer-to-Peer models. ⠀ Other complete lessons in Unit 1.3: Types of Networks (Current) Network Performance Network Hardware The Internet Network Topologies Encryption (Free) Standards and Network Protocols Network Connections