# That Learning Method Is Certainly Divisive

Middle School | NY, USA |
Learning | January 9, 2017

*(We are learning how to find out if a number Is divisible by another number. For instance, if a number is even, it is divisible by two. In this particular instance, we are learning the trick for 3’s. If a number’s digits add up to a number divisible by 3, then it too is divisible by three. For instance, 225. 2+2+5=9 and 9/3=3. Therefore, the following happens.)*

**Teacher:** “To remember the trick for threes, just remember: threesome! Threesome! Threesome!”

*(Of course, nobody understood the implication at the time, but I still wonder if she was doing it intentionally or just out of naïveté.)*