As a family, learn how to say a few things in sign language. Here's a good site to learn, or you can do a web search for sign language or American Sign Language: http://www.lifeprint.com/asl101/pages-layout/concepts.htm
Although some challenges are more obvious than others, everyone has challenges. What challenges do members of your family face?
Do you know anyone that is handicapped? How should we treat those who are handicapped?