A long time ago, someone told me that the reason most people think they are bad with math is that they had a bad experience early on and decided to give up on it. Before I teach my dosage calc class, I start with a few basic diagrams in which I first draw a capital letter A and ask the students what it means, followed by a lower case a, and then a digram of a horse. Once they have correctly described each, I write a fraction on the board and ask them what it is. After many guesses, I explain that it is little more than a diagram that represents an amount, much like the As represented sounds, and the picture represented a thing. Once past that hurdle, AI go back to equating much of their dosage calc math to the use of money, just like it is taught in kindergarten.