---
title: Define the mathematical tools required at level 3
published: true
routable: true
visible: false
lessons:
    - slug: define-234-mathematical-tools
      order: 2
---

#### Define the mathematical tools required at level 3

--------------------------------

with a **first classification to order the brainstorming a little** (counting, geometry, etc.).   
It *does not presage chapter titles *.

Feel free to create a new classification if necessary.


! *xxx*
!

(XXX-YY)
...

--------------

(XXX-YY)
...

-------------- 