This page contains links to various interactive applications that may be of interest to undergraduate mathematics students. The applications are intended to enhance understanding. They are not drill and practice exercises nor are they intended as calculation aids.

- Working with symmetries of the square
- Permutations and permutation groups
- General groups
- Cayley tables of small groups showing Quotient (Factor) Groups
- A visualisation of small dicyclic groups
- Sequences and continuity
- Limits of sequences using an epsilon band.
- Animations showing two views of a sequence
- Animations to demonstrate the sequential definition of continuity
- Complex Analysis>
- Differential Equations
- 'Flows' given by pairs of linear differential equations.

Since retiring from the Open University I have moved to writing in a combination of css, html5 and javascript. The reason for this is that the resulting software will run on mobile devices as well as computers. I also make use of 'Geogebra' when appropriate. Some of the following are versions of the original java applications.

- Algebra
- Complex Analysis
- Metric Spaces

Feedback and questions would be appreciated. Please email camilla.jordan48'at'gmail.com.