# 3 ideas involving e we saw this week

We had a little surprise this week as we saw e show up three different times. Since each kid only saw one of the ideas, I thought reviewing all three this morning would make for a great math project.

The first thing I did was introduce and review the ideas. Those ideas are:

(1) The proof that e is irrational,

Next we moved to the idea in Nassim Taleb’s tweet. The idea that $(1.01)^{365}$ and $e^{365/100}$ are so close together is a really important idea from calculus and the general idea has many important applications: