The Open University: distance learning in the UK
MathsChoices: the choices available to study Mathematics by distance learning.
To understand much about modern science requires a reasonable level of mathematics. Without some appreciation of the mathematics, the explanations are incomprehensible. The difficulty for many of us is that we dropped sciences and mathematics because they were too hard to understand at the speed required to complete a curriculum. I don’t doubt that, given enough time and good materials, an educated person could eventually understand enough. But if that time were more time than required to complete a curriculum, then it is probably a non-starter.