That's not helpful for any kids whose parents are bad at math. You're condemning them to a lifetime of ignorance because of their parents' deficiencies.
Tutors, I used them in college once I left my parents house. You can find free tutors on most college campuses for challenging subjects, Math Chemistry etc.
If you are still in high school you can find many online resources to help, Youtube Kahn Academy etc...
Just because you are bad at something doesn't mean you cant find someone to help your kid whether its a relative, neighbor, tutor or old teacher.
Any parent can give encouragement and demand their kid work hard, but a parent without knowledge has no way of assessing whether a tutor or other pedagogical assistant is any good. Try thinking about this in the context of something that you're not good at.
This was kinda my message but it didnt come out that way. There are resources out there that are sometimes freely available you can use to get better at something you arent good at.
