118. OCR A Level (H046-H446) SLR18 – 2.1 Abstraction & reality
About this video
OCR Specification Reference
AS Level 2.1.1c
A Level 2.1.1c
Abstraction is the representation of essential features without including unnecessary details. It is used to reduce the complexity of systems for users, hiding how things actually work, applying algorithms to different contexts and producing suitable user interfaces. This video explains the difference between abstraction and reality.
Key question:
- What do we mean when we talk about the differences between abstraction and reality?
00:00 Abstraction & reality
00:10 Intro
00:15 Abstraction vs reality: London example
01:15 London tube network example
01:53 Sat-nav example and data storage
03:05 London tube map
03:50 Key question
04:03 Computational thinking cheat sheet
04:45 Outro
Last updated: 23.07.26
