Computing, Computer Science, and Information Technology resources for GCSE, IGCSE, IB, and GCE A-Level
Revision notes, activities, lesson plans, teaching ideas, and other resources for GCSE, A-Level, and IB Computer Science teachers and students.
Device Specifications is a simple site with a huge database of smart phones...
Smart phone specs explained
This excellent site is a detailed guide to smart phone specifications, expl...
Software as a Service (Saas)
This short video gives an overview of Software as a Service (SaaS), which s...
Amazon EC2 - Elastic Cloud Server
Amazon Elastic Cloud (Amazon EC) is a good example of Infrastructure as a S...
IGCSE ICT provide short but clear notes and diagrams covering the different...
CommandPoint by Northrop Grumman offers a range of CAD systems for various ...
TriTech Software Systems is a company that specialises in Computer Aided Di...
London Ambulance CAD failure
The 1992 London Ambulance Service CAD failure is probably the most notoriou...
Washington State 911 Failure
A 911 emergency telephone system in Washington State and Oregon shut down f...
5.3 The Internet and the World Wide Web
5.3.1 Internet Structure and Routing
The Internet: Packets, Routing and Reliability
This is an excellent video which clearly explained how data is split into packets which are then routed across the Internet. The animated diagrams are particularly useful for helping students visualise how packets can take different routes across the Internet in response to faults or heavy traffic.
IP addresses and DNS
An overview video covering IP addresses and the workings of DNS.
5.3.2 The World Wide Web
Edexcel GCSE Computer Science: The Internet & the Web
The internet and the world wide web is closely related to, and builds upon, topic Networks. This video covers all of the theory for this component, including HTML and CSS. Of course, practical activities are also essential to understand these last two topics.
5.3.3 IP addressing
5.3.4 Accessing the Internet
Network Hardware (NIC, Switch, Router and WAP)
This video is created specifically for the IGCSE Edexcel Computer Science course. It explains the hardware required to connect to a network - be it a Local Area Network or a Wide Area Network such as the Internet. Switches, routers, and MAC addresses are also covered.