What is an applet?
Our applets take the form of interactive computer 'games' and activities designed to support deep learning of mathematical concepts.
As well as being highly educational and great fun to use, these applets are also free!

Installing Java
To run any of these applets, you need the application Java installed on your computer.

This can be freely downloaded from: http://www.java.com/en/download/manual.jsp

Important note for Mac users

If you are running a recent Mac operating system (10.10 or later), you may find that the Java applets on this site will not run. This is because Apple have removed Java from this operating system. You can solve the problem as follows:
1. Install Oracle’s versions of Java, which can be accessed from tinyurl.com/nktmxxe (download the jre version).
2. Open System Preferences (from the Apple menu) and click Java. In the new window that opens, click the Security tab and adjust the security level setting to 'High'. Then add this site in the 'Exception Site List' panel. Click OK and restart your browser. Reopen the site and when you first run an applet, click 'Run' or 'Trusted' at the security prompt.

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A few words from the authors
Of the many excellent aids to learning currently available, a stand-out tool that really excites us is the use of computer applets. Since 2005, we have worked together to design, create and test out a wide range of applets to support children’s mathematical learning. Overall, we have found them to be great fun to use and highly effective in giving learners a deep understanding of key topics in mathematics.
Alan and Roger

Alan Graham
Alan has written over 20 books on Mathematics and Statistics, including several for Hodder and Stoughton's Teach Yourself series and, together with Roger, a set of nine iBooks for the iPad. He is also the author of 23 mathematical dramas for the BBC and enjoys playing tin whistle, ukulele and guitar. For over thirty years he has lectured in mathematics education at the Open University.

His work in recent years with Roger Duke remains his current passion – creating imaginative computer applets and exploring ways of using them to make mathematics come alive for learners.

You can see many of Alan's publications using the iBookstore link below.
Alan Graham
Roger Duke
Roger Duke received his PhD in mathematics from the Open University in 1981, and for the past 20 years has been researching and teaching software engineering at The University of Queensland, with particular emphasis on formal methods for software design.

His current main research interest is in the creation of applets for teaching mathematical concepts to school students.