One of my friend working on explaining mathematical definition in comic ways.
Here is the idea
Here you will have an idea about what is SET , diagrammatic way of sets
Click here Source -Essential mathematics for Cambridge IGCSE Extended by Sue Pemberton
Cambridge IGCSE Syllabus for (both core and extended) examination in June and November 2015.
The link explains about why choose Cambridge IGCSE, content,syllabus aims and assessment objectives,Grade descriptions – Click here