PECS ํ๋ก๊ทธ๋จ์ ์ด๋ค ๊ฒ์ธ๊ฐ์?๊ทธ๋ฆผ ๊ตํ ์์ฌ์ํต ์ฒด๊ณ (PECS)๋? ๊ทธ๋ฆผ ๊ตํ ์์ฌ์ํต ์ฒด๊ณ(Picture Exchange Communication System) (Developed by Andrew S. Bondy, Ph.D. & Lori Frost, M.S.,...
