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.
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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 lesson teaches students about the star and mesh network topologies. This includes the advantages and disadvantages of each topology. 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:
Star Network Topology
Mesh Network Topology
Advantages and Disadvantages of the Star and Mesh Topologies
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Other complete lessons in Unit 1.3:
Types of Networks
Network Performance
Network Hardware
The Internet
Network Topologies (Current)
Encryption (Free)
Standards and Network Protocols
Network Connections
This lesson teaches students about the internet: Domain Name Service (DNS), server hosting, the cloud, web servers, and clients. 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:
The Internet: DNS, Hosting, The Cloud, Web Servers, and Clients.
Purpose of the DNS.
Purpose of the cloud.
Interaction between clients and web servers.
Different types of servers and the services they provide.
Advantages and disadvantages of the cloud.
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Other complete lessons in Unit 1.3:
Types of Networks
Network Performance
Network Hardware
The Internet (Current)
Network Topologies
Encryption (Free)
Standards and Network Protocols
Network Connections
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.
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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 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
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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.
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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
Buy these two resources together and save 18%.
Resources in this bundle:
Binary Crash Course
Binary Worksheet Generator with Answers!
These resources are designed for the OCR GCSE J277 specification.
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
Buy these three resources together and save 15%.
The following resources are included:
Von Neumann Architecture (OCR GCSE Lesson)
CPU Performance (OCR GCSE Lesson)
Primary Storage: RAM, ROM, Virtual Memory (OCR GCSE Lesson)
Network Performance (OCR GCSE Lesson)
Get all the resources, which cover the content for Unit 1.2, in one place and at a discounted price (10% off). This bundle contains the following resources:
Primary Storage: RAM, ROM, Virtual Memory (OCR GCSE Lesson)
Secondary Storage (OCR GCSE Lesson)
Units of Storage (OCR GCSE Lesson)
Binary Crash Course (OCR GCSE Lesson)
Representing Characters (OCR GCSE Lesson)
Representing Images (OCR GCSE Lesson)
Representing Sound (OCR GCSE Lesson)
Compression (OCR GCSE Lesson)
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.
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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)
Buy these three resources together and save 10%.
The following resources are included:
Representing Characters (OCR GCSE Lesson)
Representing Images (OCR GCSE Lesson)
Representing Sound (OCR GCSE Lesson)
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.
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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 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
Secondary storage can be a difficult idea to get your head around, but this complete lesson is going to change that! 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 flashcards 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: 2-3 Lessons
This resource is designed to cover:
The need for secondary storage.
Common types of storage technology: optical, magnetic, solid-state/flash.
Advantages and disadvantages of storage technology.
Characteristics of secondary storage technology: cost, capacity, speed, portability, durability, reliability.
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Other complete lessons in Unit 1.2:
RAM, ROM, and Virtual Memory (Primary Storage)
Units of Storage
Secondary Storage (Current)
Binary Crash Course
Representing Images
Representing Sound
Representing Characters
Compression
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.
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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 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.
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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
Get all the resources, which cover the content for Unit 1.1, in one place and at a discounted price (10% off). This bundle contains the following resources:
Purpose of the CPU (OCR GCSE Lesson)
Von Neumann Architecture (OCR GCSE Lesson)
CPU Performance (OCR GCSE Lesson)
Embedded Systems (OCR GCSE Lesson)
This lesson is about primary storage, more specifically RAM, ROM, and Virtual Memory. 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!
Please note that content about flash memory and cache is not included in this resource.
Duration: 1-2 Lessons
This resource is designed to cover:
The need for Primary Storage.
Purpose of RAM, ROM, and Virtual Memory.
Differences between RAM and ROM, and their key characteristics.
⠀
Other complete lessons in Unit 1.2:
RAM, ROM, and Virtual Memory (Primary Storage) (Current)
Units of Storage
Secondary Storage
Binary Crash Course
Representing Images
Representing Sound
Representing Characters
Compression