Update textbook.en.md

00.brainstorming-pedagogical-teams/level-N1/textbook.en.md

@@ -8,16 +8,20 @@ visible : no
 Different proposals are listed. On each proposal, you can react,
 start a discussion. You can also create new proposals.
 
-1 * Objective
+1 * Objective<br>
+(Please, comment, criticize if necessary, add ideas, contribute)
 ------------
 
+(Please, commentez, critiquez si nécessaire, proposer des idées, contribuez)
+
 * Define and explain the basic concepts and associate them with the correct vocabulary
 
 * Detect users who like to ask questions to themselves, are curious, and seem to 
 present the ability to go to level 2, and encourage them.
 
 
-2 * Idées de pédagogie
+2 * Ideas for teaching method<br>
+(Please, comment, criticize if necessary, add ideas, contribute)
 ----------------------
 
 * Simples and short sentences.
@@ -39,7 +43,8 @@ water and a pencil, not a laser beam). We have the "beyond" part to inspire them
 to amaze and enchant them, to show what is done in our laboratories).
 
 
-3 * Bagage mathématique
+3 * Mathematical background<br>
+(Please, comment, criticize if necessary, add ideas, contribute)
 -----------------------
 * use only integers and real numbers, fractions (but this will require
 a course on fractions) and the 4 basic operations: sum, subtraction,