One often hears mathematics classified into two categories: pure or applied, abstract or concrete, elementary or modern. We explore how arithmetic can dismantle such highly artificial distinctions. More specifically, we play with tiles and draw pictures to highlight how arithmetic can be both good mental exercise and a very useful tool for modern communication.
Chetty, Sunil, "Arithmetic: math as 'pure' and 'applied'" (2017). Forum Lectures. 169.