They found resources like Khan Academy and they were able to fill in those gaps and master those concepts, and that reinforced their mindset that it wasn't fixed; that they actually were capable of learning mathematics.
칸 아카데미같은 곳들을 찾았고 공백을 메워 개념들을 통달할 수 있었어요. 이로 인해 수학 유전자가 정해져 있다는 사고도 바뀌었어요. 실은 수학을 배울 능력이 된다고요.