Universal Design for Learning (UDL) is a web 2.0 tool designed by CAST for book building. UDL was developed on CAST’s research of three primary brain networks and their functions on understanding differences. The brain research networks are strategic network, affective network and recognition network. The program creates flexible goal oriented lessons with assessments that support learning for all students. Student diversity has increased in the 21st century. For that reason, classes are made of both, good and struggle readers. Students struggle in reading due to different learning disabilities, English language barriers, lack of interest, behavioral problems and many others. As a response to differences in learning styles, teachers use UDL to build books that allows learners to acquire new information and knowledge. The books bring engagement and excitement by providing learning alternatives to all students.
