Math can be terrifying for many people. This lists will hopefully improve your general knowledge of mathematical tricks and your speed when you need to do math in your head.
All of our clients have data rich applications and need equally rich data visualizations to help their end customers analyze data quickly and effectively. What makes my job really interesting is that these clients are in different industries and are using different technologies. So we have pulled together a set of 28 tools for creating graphs, Gantt charts, diagrammers, calendars/schedulers, gauges, mapping, pivot tables, OLAP cubes, and sparklines, in Flash, Flex, Ajax or Silverlight.
T. Gruber, and G. Olsen. Principles of Knowledge Representation and Reasoning: Proceedings of the 4th International Conference (KR '94): Bonn, Germany: 1994, May, 24 - 27, page 258-269. Morgan Kaufmann Publishers, (1994)