Optimus Education has a range of free activties you can download from their site. These actvities would be useful for INSET sessions. There are also some simple ideas/ summaries that would be helpful when putting together a Powerpoint/ Handout pack.
* Presentation - Understanding Dyslexia
* Dyslexia audit tool
* CPD activities
http://files.optimus-education.com/training/dyslexia/What%20is%20dyslexia.pdf