diff --git a/preparation-skype-2019-04/page.en.md b/preparation-skype-2019-04/page.en.md
index 688029291..364afecbe 100644
--- a/preparation-skype-2019-04/page.en.md
+++ b/preparation-skype-2019-04/page.en.md
@@ -42,20 +42,20 @@ We propose three parts:
 2. The possibility for a user to do self-assessments and be guided to realize his program will be implemented in a third phase of the project.
 
 #### "A progressive teaching  in 4 levels (From a basic level equivalent to baccalaureate minus 3 years up to a higher level bac. + 2 years)."
-1. This is a specificity and a requirement for the project. All courses on a given theme are realized by a same pedagogical team on 4 levels of increasing mastering.
-2. From discussion with colleagues, the upper level must be equivalent to a end of Bachelor level. So the curriculum should cover teh whole Bachelor level in a scientifical field. This will be most useful for professors and their students, and more useful for students who have to study prerequisites for an universitary exchange at master level. So it is not a higher level at "BAC +2 years" but at "BAC +3 to 5 years".
-3. The Geometrical optics INSA needs quickly will be done over the first 3 levels.
+1. This is a specificity and a requirement for the project. All courses on a specific theme are realized by a same pedagogical team (for a maximum of coherence) on 4 levels of increasing mastering.
+2. From discussion with colleagues, the upper level must be equivalent to a end of Bachelor level. So the curriculum should cover the whole Bachelor level in a scientifical field. This will be most useful for professors and their students, and more useful for students who have to study prerequisites for an universitary exchange at master level. So it is not a higher level at "BAC +2 years" but at "BAC +3 to 5 years".
+3. The Geometrical optics course that INSA needs quickly will be done over the first 3 levels.
 4. The exact number of levels can vary "3, 4 or 5) dependening of the subject. This is not a problem in the structure of the site.
 
 #### "A teaching in 4 languages, developed by small international teams on each theme (ideal: Colombia and Mexico for Latin America, France and Norway for Europe)"
-<ins>Target of achievement at the end of the first year :</ins> The beta version of "Geometrical optics" required for September 2019 will be realized in 3 languages : Spanish, English and French. For the fourth language, see the discussion points "Opening possible for other countries?".
+<ins>Target of achievement at the end of the first year :</ins> The beta version of "Geometrical optics" required for September 2019 will be realized in 3 languages : Spanish, English and French. For the fourth language, see the discussion point "Opening possible for other countries?".
 
 #### "Diferentes posibilidades de exposición de los  cursos para adaptarse a las necesidades pedagogicas de cada alumno (cada curso está estructurado en 3 partes : ver "proyecto:pedagogía" en el wiki)"
  <ins>Target of achievement at the end of the first year :</ins> yes, should be available for the beta version of the site.
 
 ### Additional objectives
 
-#### INSA Director’s Attention (Bertrand Raquet) : "the work undertaken must be"to rely on technological choices and modalities, supported/validated by C2IP(\*) and OpenINSA, to ensure continuity and consistency in all digital productions of the INSA Toulouse, serving students, INSA and other partners".
+#### INSA Director’s Attention (Bertrand Raquet) : "the work undertaken must rely on technological choices and modalities, supported/validated by C2IP(\*) and OpenINSA, to ensure continuity and consistency in all digital productions of the INSA Toulouse, serving students, INSA and other partners".
 (\* : Centro de Innovación y Ingeniería Pedagógica del INSA-Toulouse).
  We believe that this request is fully justified and should apply to all the partner institutes of the project.
 1. This adaptability and compatibility guided the technical choices. Computer and web specialists from the engineering and educational innovation centres of the various partner institutes must be brought together.