Manage the environment
Try to plan as much as you can in advance, providing an agenda to the student at the beginning of class. Any change can increase anxiety in a student with Asperger Syndrome/HFA. Strive to provide consistency in the schedule and avoid sudden changes, but provide verbal cues to the student prior to any change to plans.
Use a visual schedule/agenda, and incorporate as many visuals as you can into your lesson plan. This will not only benefit a child with Asperger Syndrome.
Keep it Simple
Keep language simple and concise (clear), and speak with a deliberate pace. Students have difficulty “reading between the lines,” understanding abstract concepts like sarcasm, or interpreting facial expressions.
Manage change of plans
Always remind students that plans can change and provide verbal cues in advance of a change if plans. Share "plan B" with the student in advance, even if you don't think you will need it.
Using specific praise works well with all students, but especially students with Asperger Syndrome. Be sure to compliment attempts, not just successes, and be clear about why you're complimenting the student as well as to what you're complimenting.