Update cheatsheet.en.md

03.M3P2-pedagogy/02.M3P2-pedagogy/cheatsheet.en.md

@@ -12,9 +12,9 @@ visible: true
 ##### A course : 3 parts <!-- +1  -->
 <br>
 
-**Pedagogical stage** : small and consistent *set of courses at a specific level*.
+**Pedagogical stage** is a small and consistent *set of courses at a specific level*.
 
-**A course** : designed in **3 parts** called *main*, *overview* and *beyong*. <!--, **+ 1** *self-evaluation* (expected 2022). -->
+**A course** is designed in **3 parts** called *main*, *overview* and *beyong*. <!--, **+ 1** *self-evaluation* (expected 2022). -->
 
 * "**main**" part : to *study thoroughly*, to understand and master, rather than memorize.
 ![](main-700-en.png)