Revision notes, activities, lesson plans, teaching ideas, and other resources for GCSE, A-Level, and IB Computer Science teachers and students.
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...
London ambulance failure (2017)
A 2017 failure of a London ambulance dispatch system is believed to have le...
Computer Aided Dispatch outage
A 911 system failure left emergency calls unanswered and is said to have co...
Load balancing videos
This short article and the associated video explain 5 load balancing algori...
Intergraph Computer-Aided Dispatch (I/CAD
Intergraph Computer-Aided Dispatch (I/CAD) is a system offering many of the...
Boolean logic worksheet pack
These three Boolean logic worksheets have exam style questions on logic sta...
4.3.4 Searching algorithms
Click here for recommended AQA A-Level Computer Science textbooks.
The Searching Boxes game from the CS Field Guide makes for a good lesson starter and can help students understand the need for different searching algorithms. Once they have tried part 1, students could try Searching Boxes Part 2 and try to devise a better search algorithm.
Linear search / sequential search algorithm
The linear search or sequential search algorithm is very straightforward, but this video explains it. It also makes an important point that students often forget: that is, while we can see all of the numbers on display at the same time in our examples, a computer cannot. Therefore no algorithm can make 'jumps' or 'assumptions' about the data - it must be searched item by item if it is unsorted. The video also includes pseudo code for the algorithm
This Harvard CS50 video tells you everything you might want to know about the binary search algorithm. The video includes a detailed step by step explanation, plus pseudo code, and an example data set.