Teach Computing

Revision notes, activities, lesson plans, teaching ideas, and other resources for GCSE, A-Level, and IB Computer Science teachers and students.

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UK Computing Laws

This video from Computer Science Tutor covers the main UK computing laws re...

Wireless Networking (Wi-Fi, Security, and Hardware)

This video about wireless networking includes everything that is needed for...

Network topology videos

These four excellent videos from Computer Science tutor cover the four ma...

Network protocols

These four videos explain the main networking protocols that students are l...

Embedded Systems video

This short video is a good over of embedded systems, covering the main poin...

Representing Text in Binary

This video clearly explains the two main ways of representing text in binar...

Types of Malware

This video explains the various types of malware including viruses and troj...

Protecting against Malware

Following on from the Types of Malware video, this video explains technique...

Video: Network Security #1

This video gives an overview of the threats to networked computer systems, ...

Resources discount offer

1.2 Decomposition and Abstraction

The decomposition and abstraction topic relates closely to the computational thinking and programming topics. Students should be able to analyse problems and design solutions, as well as break problems down into smaller (sub) problems. Abstraction of real life concepts is also an essential skill. Click here for recommended Edexcel GCSE Computer Science textbooks.

1.2 Decomposition and Abstraction

Computational thinking lesson resources

Computational Thinking unit - PG Online

This free unit from PG Online is optimized for the OCR A-Level syllabyus. However the key parts - problem recognition, decomposition, and so on - are applicable to a wide range of courses and specifications.


Updated: 2017-10-17