Disabilities legislation and Section 508 are pushing accessibility standards in today's society and in institutions of education. Systems theory can be used to unify thought, intent, and practice connected to the use of information technology in teaching and learning. Systems theory, systems thinking, and its underlying premise can allow individuals and organizations to identify and solve problems related to practice in social systems such as education. Information in this book can be used to assist individuals, groups, and systems who are working to provide accessible teaching and learning via the Internet.