Educators in South Korea have been adapting textbooks and related activities to meet the increasing need for national-level curricula for teachers of special and general education for students with disabilities at the elementary school level. The underlying aim is to create inclusive educational environments. There are four steps in adapting national-level textbooks to make education inclusive of students with disabilities in South Korea: (a) Step 1--Determine the need for textbook adaptation, (b) Step 2--Identify and adapt curricular goals and objectives, (c) Step 3--Create classroom materials and adapt textbooks, and (d) Step 4--Monitor the progress of the use of textbook adaptations. This column presents the process, using examples of topics in third-grade mathematics that are foundational for future learning.