As I've told you repeatedly, VSA Arts is in the business of creating a world where people with disabilities can "learn through, participate in, and enjoy the arts."
Visitors to their terrific website will find resources galore and some non-free things too, including this 5-module magic-box called "Express Diversity"; which encourages children to "ask questions, engage in discussions, and work toward a better understanding of each other." The program costs $75 plus $12 shipping. Surprisingly, $87 is more than many TAs make for a workshop.
You could ask your employer to buy one for the office.
Here's the order form (PDF.)
Also: Liz Lerman Dance Exchange - Ferocious Beauty: Genome