Math & Chemistry teachers use Google Docs, too! And so do other content areas and teachers who integrate math and sophisticated science across content areas. And, for those peeps, there is the ability to add equations and other “mathy” symbols to Google Docs. Just click Insert > Equation.
A quick note, before we get to the GIF: Some educators will tell you that this tool could be better. And for people looking to use this functionality regularly, they’re probably right. In that case you may want to consider other tools (equatIO is a great one). But for people who just use it occasionally, I think the Equation Editor is a’okay.