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.
Encontraram recursos como a Khan Academy, conseguiram preencher as lacunas e dominar os conceitos básicos. Isso mudou a mentalidade de que afinal não era bem assim, que eles eram capazes de aprender matemática.