I've always had a bit of a problem with materialism. The problem is that I'm not quite sure what it means.
That's pretty much why I don't consider myself a materialist.
Materialism: a theory that physical matter is the only or fundamental reality and that all being and processes and phenomena can be explained as manifestations or results of matter.
I take materialism to be a philosophy, rather than a theory.
Mathematics does not seem to be material. Some materialists say that mathematics is pencil marks on paper, but that seems too superficial. Others may say that mathematics supervenes on the material, and perhaps it does. But studying material won't help you learn mathematics.
I tend to characterize myself as some kind of behaviorist (but not a Skinner behaviorist). Our behavior in the world leads us to know something about material and something about mathematics.
Fundamentalism - the anti-American, anti-Christian branch of American Christianity