Mathematics of computer science
Many aspects of computer science are underpinned by mathematical principles – most of which will not encountered by students of other subjects. This topic covers the basic building blocks of computer data represented using binary, denary and hexadecimal number systems. It covers the logical operations that are applied to these representations of data and their algebraic laws. Set theory, formal languages and floating point binary are also covered in depth.
The red black mind meld
A fun introduction to algebra within computer science via the medium of a card trick. This resource is part of the CS4FN series from Queen Mary, University of London. The resource consists of an introductory presentation and accompanying activity sheet for students.
Mathematics for A level computer science
This is a great resource for providing underpinning mathematical knowledge for A level computer science. It is broken down into topics so could be used in small sessions to reinforce understanding. Set theory, numbers, cardinality, cartesian product, regular expressions, vectors and dot product, functions and Big O notation are all covered in this very comprehensive which is also very useful for teachers whose background does not include mathematics.
Binary, decimal, hexadecimal conversion activity
Students always need practice in number system conversion. This resource gives them instant feedback and allows them to progress from conversion to binary addition. This would make an ideal homework activity. the file is a macro enabled worksheet and can be downloaded from the zip file.
Floating point binary representation worksheet
A student worksheet with answers covering the topic of floating point binary representation. It contains answers so can be used for independent study.
Normalisation of floating point binary numbers
Normalisation of floating point binary numbers is usually a topic where students require practice. This pair of documents explain the technique and then provide a set of questions with answers for independent working.
Learning from probabilities
One of the series of Royal Institution Christmas lectures focusing on Bayes’ theorem. The topic of the resource is an investigation into stolen chocolate biscuits so would make an interesting end of term diversion.
Searching, sorting and Big O notation
A resource from the CS4FN bank produced by Queen Mary and King’s College, University of London. Students will be able to link the algorithms that they have learned and the relative complexity expressed in Big O notation. The resource consists of a series of slides, program files with solution, an activity sheet and a separate homework sheet.
Boolean algebra exploration
This set of resources provides comprehensive coverage of the topic of logic, Boolean algebra and simplifying expressions using Karnaugh maps. There are a series of student activities involving deriving expressions from logic gate combinations, rules of Boolean algebra and building logic expressions.
Karnaugh maps
Karnaugh maps are often quite challenging for students. This structured resource from the WJEC awarding body works through the processes in clear steps. It includes activities and examples providing a comprehensive introduction.
Regular expression tutorial
This is a very comprehensive tutorial on the topic of regular expressions. It would be useful as a reference or for high ability students to work through to gain a very thorough understanding. A variety of languages are used to illustrate key principles which makes this document useful as a reference.
Basics of set theory
Two resources from the University of East Anglia that cover the basics of set theory with examples. Terminology is clearly explained. This would form a great independent learning resource or classroom introduction to the topic.
Dominating sets
A fiendishly simple problem which is more complex than students first think. It combines together what they have already learned about traversing graph data structures but also building a set of visited locations. The activity also links to defining problems as P or NP and complexity represented in Big O notation.
Range versus accuracy in floating point binary numbers
Students need to be aware of the trade-off when the number of bits allocated to the mantissa and exponent are increased or decreased. This worksheet allows them to answer practice questions. Answers are provided.
Summary of Boolean algebra
This document is a Computing at School community resource that covers the laws of Boolean algebra. It consists of a student worksheet and answer sheet. It is very suitable as a revision resource.
Number system conversion triominoes
Another great resource from the Computing at School community which is suitable as a consolidation activity for small groups, the set of triominoes allows students to convert numbers to build the completed solution. Great for revision.