1. Intuitive acceptance of proof by contradiction
2. Universal Design for Learning
3. Byun, C. S., Park, W. G. & Chae, J. M. (2011). Inclusive-class teachers’ recognition of educating students with learning disabilities. Journal of Special Education & Rehabilitation Science,50(4), 399–417. http://uci.or.kr/G704-001516 2011.50.4.007
4. CAST. (2018). Universal Design for Learning guidelines version 2.2. CAST. http://udlguidelines.cast.org