I love to teach math. I saw in my first student teaching position that elementary school teachers don't know math so well, typically being good with language arts or a combination of all the subjects. Though I originally got my teaching credential in elementary education, that student teaching experience made me decide to teach math, which I did for most of my 26 years teaching.
I taught math to 7th graders for ten years and high school for the last part. I typically taught kids who had trouble getting it. I decided to create my own lessons and eventually my own text book to teach it so more practice could be done with emphasis on graphing, which is what most kids don't get (though it's really easy when told my way).