If the child can't advance in level, it's usually not because of wrong answers but because the answers aren't quick enough, so they will still feel they have accomplished something--they can have the proud feeling getting full score and of feeling that "nobody taught me, I did it myself."
小孩如果不能晉級，大部分不是因為做錯，而是答題不夠快，所以還是會有成就感﹘﹘拿滿分或是「沒人教，我自己就會做」的得意。