diff --git a/module2/exo1/toy_notebook_fr.ipynb b/module2/exo1/toy_notebook_fr.ipynb
index 245f20e97f8197d6d2b668fff3a7640d762ad35f..2639f62f84eae48a970afbb400c8182f32548ffa 100644
--- a/module2/exo1/toy_notebook_fr.ipynb
+++ b/module2/exo1/toy_notebook_fr.ipynb
@@ -2,19 +2,25 @@
  "cells": [
   {
    "cell_type": "markdown",
-   "metadata": {},
+   "metadata": {
+    "hideCode": false,
+    "hidePrompt": false
+   },
    "source": [
-    "# À propos du calcul de π\n",
+    "# À propos du calcul de $\\pi$\n",
     "\n",
     "## 1.1 En demandant à la lib maths\n",
     "\n",
-    "Mon ordinateur m'indique que π vaut *approximativement*"
+    "Mon ordinateur m'indique que $\\pi$ vaut *approximativement*"
    ]
   },
   {
    "cell_type": "code",
    "execution_count": 2,
-   "metadata": {},
+   "metadata": {
+    "hideCode": false,
+    "hidePrompt": false
+   },
    "outputs": [
     {
      "name": "stdout",
@@ -31,7 +37,10 @@
   },
   {
    "cell_type": "markdown",
-   "metadata": {},
+   "metadata": {
+    "hideCode": false,
+    "hidePrompt": false
+   },
    "source": [
     "## 1.2 En utilisant la méthode des aiguilles de Buffon\n",
     "\n",
@@ -41,7 +50,10 @@
   {
    "cell_type": "code",
    "execution_count": 4,
-   "metadata": {},
+   "metadata": {
+    "hideCode": false,
+    "hidePrompt": false
+   },
    "outputs": [
     {
      "data": {
@@ -65,7 +77,10 @@
   },
   {
    "cell_type": "markdown",
-   "metadata": {},
+   "metadata": {
+    "hideCode": false,
+    "hidePrompt": false
+   },
    "source": [
     "## 1.3 Avec un argument \"fréquentiel de surface\""
    ]
@@ -73,7 +88,10 @@
   {
    "cell_type": "code",
    "execution_count": 13,
-   "metadata": {},
+   "metadata": {
+    "hideCode": false,
+    "hidePrompt": false
+   },
    "outputs": [
     {
      "data": {
@@ -106,7 +124,10 @@
   {
    "cell_type": "code",
    "execution_count": 14,
-   "metadata": {},
+   "metadata": {
+    "hideCode": false,
+    "hidePrompt": false
+   },
    "outputs": [
     {
      "data": {
@@ -125,6 +146,8 @@
   }
  ],
  "metadata": {
+  "celltoolbar": "Edit Metadata",
+  "hide_code_all_hidden": false,
   "kernelspec": {
    "display_name": "Python 3",
    "language": "python",