I grew up with a diverse group of friends. The way math is taught is quite often racist. I've seen entire math textbooks based around examples featuring Americ

I grew up with a diverse group of friends. The way math is taught is quite often racist. I've seen entire math textbooks based around examples featuring American sports. If you don't know the rules of American football, you are not going to understand any of the examples in the book. I spent a lot of time in school and college explaining various American sports rules to friends. That is the most trivial of examples, but it is a hugely impactful one for a lot of people. I have seen large amounts of frustration because some math book author couldn't keep his favorite sports jargon from littering the entire book. You have other biases as well that can make students feel like shit. Story problems about a working father and a stay at home mother, sounds like nothing for many people, but for quite a few kids being reminded again and again that "not having a dad" is unusual, well, why the hell is the math book doing that? Just stick to problems involving trains.