Show HN: I recorded a video course to let anyone learn Math bottom-up

This course was intended for ages 7 and up, including adults. I really tried to make the material accessible to everyone, and hopefully not be too boring, while it establishes a solid foundation for learning anything else.

If you do watch it, let me know if it is helpful in getting a solid foundation!

My background: Before I got full-time into software development, I was doing a Ph. D in math at NYU. I thought YouTube needed something like this.