diff --git a/journal/Journal2Bord.md b/journal/Journal2Bord.md
index 2efb68cad70eef47d1e66a0df8bc71ac313f26d8..9731884096eb3cc31f82392e12c80db2b9b67b99 100644
--- a/journal/Journal2Bord.md
+++ b/journal/Journal2Bord.md
@@ -23,4 +23,7 @@
     * [docutils](https://docutils.sourceforge.io/docs/index.html)
 
 **Indexation**
-  * [docfetcher](http://docfetcher.sourceforge.net/fr/index.html)
\ No newline at end of file
+  * [docfetcher](http://docfetcher.sourceforge.net/fr/index.html)
+
+ **Doc interne**
+  * JupyterLab and PowerShell (linux Operating System) 
\ No newline at end of file
diff --git a/journal/JupyterLabWithPowerShell.md b/journal/JupyterLabWithPowerShell.md
new file mode 100644
index 0000000000000000000000000000000000000000..68e0e1a5119bf381de128b9012c6c405a5840e1a
--- /dev/null
+++ b/journal/JupyterLabWithPowerShell.md
@@ -0,0 +1,75 @@
+# **JupyterLab with PowerShell**
+
+## Installation python
+
+On choisit l'installation [miniconda](https://docs.conda.io/en/latest/miniconda.html)
+
+## Installation JupyterLab et PowerShell
+
+**JupyterLab**
+
+JupyterLab est la seconde génération de notebook.
+
+``` bash
+conda install -c conda-forge jupyterlab
+```
+**PowerShell**
+
+Sous linux, utilisez votre gestionnaire de package
+
+``` bash
+apt install powershell
+```
+
+## Installation PowerShell
+
+A ce jour conda ne contient pas le package on passe par pip.
+Tout d'abord on vérifie l'environnement:
+``` bash
+which python
+which pip
+```
+On doit être ds l'environnement conda 
+
+De façon standard ressemble sous linux à 
+```bash
+/home/$login/miniconda/bin/python
+/home/$login/miniconda/bin/pip
+```
+
+On installe PowerShell:
+```Bash
+pip install powershell_kernel
+python -m powershell_kernel.install
+```
+## Vérifications
+1. __Test kernel JupyterLab:__
+On lance JupyterLab
+``` shell
+jupyter lab
+```
+on doit voir :
+
+![JupyterLab with powerShell](./images/JupyterLabWithPowerShell.png)
+
+2. __ Test version de PowerShell: __ 
+
+On ouvre un notebook PowerShell
+et on tape:
+```
+$>$PsVersionTable
+```
+```code
+
+Name                           Value
+----                           -----
+PSVersion                      7.0.0
+PSEdition                      Core
+GitCommitId                    7.0.0
+OS                             Linux 3.2.0-4-amd64 #1 SMP Debian 3.2.82-1
+Platform                       Unix
+PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
+PSRemotingProtocolVersion      2.3
+SerializationVersion           1.1.0.1
+WSManStackVersion              3.0
+```
diff --git a/journal/gitPratique.md b/journal/gitPratique.md
new file mode 100644
index 0000000000000000000000000000000000000000..15edc90c038eb2fb077808f6a0c57a3663598208
--- /dev/null
+++ b/journal/gitPratique.md
@@ -0,0 +1,41 @@
+# commandes GIT de base #
+
+1. *** __Recupérer un depot git__ ***
+
+``` bash
+mkdir copieDepot
+cd copieDepot
+git clone url
+```
+
+
+2. *** __Mettre à jour du depot distant vers le local__ ***
+
+Evaluer les modifs
+``` bash
+cd copieDepot
+git status
+```
+git renvoie la liste des modifs. On ajoute suivi des fichiers modifiés
+
+```
+git add monPremierFichierModifie
+git add monSecondFichierModifie
+
+git commit -m "mon message de commit de mise a jours"
+```
+autre possibilité 
+```
+git pull
+```
+
+
+3. *** __Mettre à jour du depot locl vers el distant__ ***
+
+Dans son répertoire git :
+```
+git push
+```
+On doit avoir ses identifiants
+
+
diff --git a/journal/images/.gitkeep b/journal/images/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/journal/images/JupyterLabWithPowerShell.png b/journal/images/JupyterLabWithPowerShell.png
new file mode 100644
index 0000000000000000000000000000000000000000..e456ca0b95b90375581835fcbcfcf5f16ad3aba3
Binary files /dev/null and b/journal/images/JupyterLabWithPowerShell.png differ
diff --git a/module2/exo1/toy_notebook_fr.ipynb b/module2/exo1/toy_notebook_fr.ipynb
index 9951fabd5fa51824d5426668f5c46602b8d05a4e..77e8a712e5522077ef88ff00a9926103ef94017b 100644
--- a/module2/exo1/toy_notebook_fr.ipynb
+++ b/module2/exo1/toy_notebook_fr.ipynb
@@ -4,12 +4,14 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "# <div align=\"center\"> toy_notebook_fr * </div> #\n",
+    "# <div align=\"center\"> toy_notebook_fr</div> #\n",
     "\n",
     "\n",
     "\n",
     "<div align=\"center\"> March 28, 2019 </div>\n",
     "\n",
+    "\n",
+    "\n",
     "## 1 À propos du calcul de π ##\n",
     "\n",
     "### 1.1 En demandant à la lib maths ###\n",