I teach mathematics. In mathematics, we have a thing called “literal equations”. When I first met this term, and indeed for a long time afterward, it confused me. Isn’t every equation literally an equation? What makes some equations more equation-y than other equations? The issue here is that “literal” means something different in mathematical argot…
Iโm going to talk about logs here. I have more to say later, but this is a basic intro sketch. First Iโm going to talk about the stuff of elementary school. When it comes to mathematics, most people find comfort in elementary school mathematics. So, consider the humble number line: We want to move along…
A tale of carts and horses. [mathjax]My child is in fifth grade. Last Friday, we received the second volume of his mathematics workbook. It starts with multiplication of fractions; the next chapter is division of fractions. Addition (and subtraction) of fractions with different denominators is in the first volume. I believe this order persists partly…