Update textbook.en.md

00.brainstorming-pedagogical-teams/45.synthesis-structuring/electromagnetism/n2/textbook.en.md

@@ -22,7 +22,18 @@ This tree structure may evolve, but it is less agile than the educational conten
 themselves. In themselves, the titles of the chapters and sub-chapters are less important.
 They can be changed easily, they are not the structure.
 
-#### Advice on how to structure this level
+#### Advice on how to structure this level 2
+
+Remember, in this level we are **not tied to any secondary school program** and especially not to the preparation
+of a baccalaureate.
+
+We are only linked to the **necessary prerequisites** for our teaching (linked to the 
+difficulties of our students, and more generally of any Internet student interested 
+in science and technologies on this scientific learning path at level 2). 
+**Think freely and without references in mind**.
+
+This level **must also be very attractive** for science. For young people, this means 
+speaking less in terms of skills, than in more attractive terms and awe of Science. 
 
 At this first level, think:<br>
 What knowledge on this topic is useful in everyday life or for understanding future technologies?<br>
@@ -34,8 +45,8 @@ Chapter titles should be words from everyday life.
 #### To participate
 
 The different proposals are numbered: they start with:
-[BRST-EMG1-number]: Title <br>
-_BRST-EMG1 for Brainstorming STructure ElectroMaGnétism level 1)_
+[BRST-EMG2-number]: Title <br>
+_BRST-EMG2 for Brainstorming STructure ElectroMaGnétism level 2)_
 
 To **add a proposition, create it** between 2 propositions, or in the following (following 
 the logic of the proposition). To do this, start with: <br>
@@ -47,14 +58,14 @@ starting with three initials in brackets representing you:
 *(my initials): my comment*
 
 _or send an email specifying:_
-_the reference [BRST-EMG1-number], the my 3 initials and my comment_
+_the reference [BRST-EMG2-number], the my 3 initials and my comment_
 _(+ a title if it's a new proposition)_ 
 
 To **communicate my proposals**, either:
 * directly on the GitLab m3p2 with your login/password: <br>
 if you are not there already, go to https://gitlab.m3p2.com/brainstorming-123-electromagnetism, <br>
 and at the end of the page, in the green box click on "Edit this course".
-* on the google drive m3p2 project in the document Brainstorming-1-electromagnetism.docx.
+* on the google drive m3p2 project in the document Brainstorming-2-electromagnetism.docx.
 * or send an email to ... specifying: <br>
 the reference [BRST-EMG1-number], then the 3 letters that identify me (my initials) and my comment
  (+ a title if it's a new proposition) _
@@ -63,7 +74,7 @@ The Gitlab will be kept up to date with your proposals, also translated into Fre
 _(This is not required, but if you can also make your contribution in English, but also in_
 _French or Spanish, this will ease the translation work)._ <br>
 This page at this level can be viewed in a multilingual version at: <br>
-https://m3p2.com/polyglot/brainstorming-pedagogical-teams/synthesis-structuring/electromagnetism/n1 
+https://m3p2.com/polyglot/brainstorming-pedagogical-teams/synthesis-structuring/electromagnetism/n2 
 
 ----------------------------------------