Why a separate series?
These six lessons are kept separate so OCR, AQA and Edexcel students are not asked to learn material their exam will not test. Inside each lesson you will see a CIE only banner and the relevant Cambridge syllabus reference (2.1.4, 5.2, 7.1, 7.2, 6.2, 3.1/3.2). When you generate a Scheme of Work for board cie_0478 on CodeBash, these lessons are added automatically and flagged in the lesson list.
Lessons in this series
Each lesson maps to a specific CIE 0478 syllabus point. Work through in any order.
1
Error Detection
Parity bits, checksums, check digits and Automatic Repeat Request. How a receiver knows whether the data it just received is corrupted, and what to do about it.
2
Encryption in Depth
Symmetric vs asymmetric encryption, public and private keys, the key-distribution problem and how HTTPS uses both. CIE goes much deeper here than the UK boards.
3
Automated Systems
Sensors, microprocessors and actuators in a continuous feedback loop. Worked greenhouse example and the advantages and disadvantages of automation.
4
Robotics
The three defining characteristics of a robot, four named types (industrial, domestic, exploration, surgical) and the social impact of replacing humans with robots.
5
Digital Currency and Blockchain
How a decentralised ledger works, why hashed block chains resist tampering, and the energy and ethical drawbacks of large cryptocurrency networks.
6
Input/Output Devices and Sensors
Cambridge names specific devices (barcode/QR readers, 3D printers, laser vs inkjet, named sensors). This lesson covers each one with its typical use, advantages and limitations.
What you'll cover
Data integrityParity bits, checksums, check digits and ARQ for detecting corrupted data
Asymmetric encryptionPublic and private key pairs and the key-distribution problem
Automated controlSensors, actuators, microprocessors and the feedback loop
RoboticsWhat makes something a robot, types and social impact
BlockchainDecentralised hashed ledgers and tamper resistance
Devices and sensorsSpecific named devices that CIE asks about by name
Teacher tools
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Every lesson includes a teacher panel with starter activity, lesson objectives, key vocabulary, discussion questions, exit tickets and a homework suggestion. Click Teacher Panel at the bottom-right of any lesson to open it.
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