Parents can learn, too. Folks should never stop learning. What’s missing here isn’t knowledge. It’s desire. Though if their kids’ futures aren’t incentive enough, God knows what is.
Of course, learning should never stop but seriously how many parents could even understand calculus much less teach it.
It is more because of intelligence levels, only after a certain point does desire play any role. You know who would fail this in overwhelming numbers.
I loved math but have to agree with the poster that kids go into it hating and fearing math.