Geometry, Finance, Accounting

I teach math and business and there are so many boards that would be helpful for each of the subjects I teach.  I found the following to be helpful.
Accounting: https://www.onesmartdollar.com/4-things-certified-public-accountant-will-never-tell-know/
Geometry: http://highschoolmathfun.blogspot.com/2016/02/geometry-all-things-parallel-with.html?m=1
Finance: https://thesavvycouple.com/10-personal-finance-sentences/?utm_content=buffere73f1&utm_medium=social&utm_source=pinterest.com&utm_campaign=buffer