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.
Они полагали, что не склонны к математике, но повзрослев, всё таки решили выучить предмет, нашли ресурсы, вроде « Академии Хана », заполнили все пробелы в знаниях и освоили все принципы.