Read a book to the class about disabilities. Suggestions include: "A Very Special Critter" by Gina and Mercer Mayer, "Don't Call Me Special: A First Look at Disability" by Pat Thomas, "Rolling Along with Goldilocks and the Three Bears" by Cindy Meyers, or a non-fiction book such as "Some Kids Use Wheelchairs" by Lola M. Schaefer or "People With Disabilities" by Pete Sanders.
Show students pictures of children with disabilities, such as a child in a wheelchair, someone who is blind and someone who is deaf. Ask students to share how the children are different from them and create a list of their ideas on the board. Then ask students to explain how the children are the same as they are and add that list to the board. Students will notice that they are more alike than different from children with disabilities.
Ask an adult or teenager with a physical disability to visit the class. The visitor should talk to the children about his or her disability and what "normal" activities he or she can and cannot do. Have the visitor share with children why it is important to treat disabled people with understanding and to not make fun of them. Provide time for students to ask questions of the visitor.
Bring a wheelchair, big headphones and blindfolds into the classroom and have children pretend to be disabled for the day. Let children take turns sitting in the wheelchair, and stage activities that are difficult for a person in a wheelchair, such as playing a game of tag or hopscotch. Show a movie and require some students to wear large headphones and blindfolds while it is playing. Ask them to share with the class how it felt to not be able to see or hear during the movie.