Universal Design

Seven Principles of Universal Design

Equitable Use – The design is useful and marketable to people with diverse abilities

Flexibility in Use – The design accommodates a wide range of individual preferences and abilities

Simple and Intuitive Use – The design is easy to understand, regardless of the user's experience, knowledge, language skills or current concentration level.

Perceptible Information – The design communicates necessary information effectively to the user, regardless of ambient conditions or the user's sensory abilities

Tolerance for Error – The design minimizes hazards and the adverse consequences of accidental or unintended actions.

Low Physical Effort – The design can be used efficiently and comfortably and with a minimum of fatigue.

Size and Space for Approach and Use – Appropriate size and space is provided for approach, reach, manipulation and use regardless of user's body size, posture or mobility.

Universal Design for Learning

Recognizing that the way individuals learn can be unique, the UDL framework, first defined by David H. Rose, Ed.D. of the Harvard Graduate School of Education and the Center for Applied Special Technology(CAST) in the 1990s, calls for creating curriculum from the outset that provides:

Multiple means of representation to give learners various ways of acquiring information and knowledge,
Multiple means of expression to provide learners alternatives for demonstrating what they know, and
Multiple means of engagement to tap into learners' interests, challenge them appropriately, and motivate them to learn

https://en.wikipedia.org/wiki/Universal_Design_for_Learning

For additional information:

National Center on Universal Design for Learning

http://accessproject.colostate.edu/udl/