I don't think this counts as a homework question and if it does, I'm sorry. At my high school, we have an annual coal fair and I wanted to do a calculus-based math project, but I'm having trouble coming up with any good ideas. The project can be about any part of the coal industry, so does anyone have any ideas? I'll take about anything at this point. I don't need an answer just a problem, or equation, or something to work with.