Right now everyone teaches anonymous functions first because they are easier to express in iex. Here's our ordering:

1. We introduce the concept of a module. Not coding, just the concept.
2. Invoking M.f() in a module
3. defmodule/def.
4. Pipes.
5. Anon f.

I ❤️ this order

— Bruce Tate (@redrapids) April 24, 2019

By Bruce Tate:

1. We introduce the concept of a module. Not coding, just the concept.
2. Invoking M.f() in a module
3. defmodule/def.
4. Pipes.
5. Anon f.

"I prefer books as my preferred method of learning"

"If you want to teach someone a real skill, teach him how to fail. He will never learn it in school." - @nntaleb

— Nassim Nicholas Taleb's Wisdom (@TalebWisdom) May 30, 2019

Module, function and arguments.

Math.pi()
alias :math, as: Math
Math.pi()

Kenel.abs(-34)
Kernel.abs (-34)
Kernel.absolute(-34)

Kernel.abs(-34)
Kernel.abs -34
Kernel.abs (-34)

Kernel.round(34.6)
Kernel.floor(34.6)
Kernel.ceil(34.9)

Kernel.max(1,2)  
Kernel.max(2,1)  
Kernel.min(2,1)  
Kernel.div(10,4)
Kernel.rem(10,4)
Kernel.div(10,0)