diff --git a/module2/exo1/toy_notebook_en.ipynb b/module2/exo1/toy_notebook_en.ipynb
index c7c907ae420ea873d082bfae8b37994f1fd44efd..b4b9ff9a27ed91ef6040628d13f1b95d667c8b4b 100644
--- a/module2/exo1/toy_notebook_en.ipynb
+++ b/module2/exo1/toy_notebook_en.ipynb
@@ -9,9 +9,7 @@
   },
   {
    "cell_type": "markdown",
-   "metadata": {
-   "hideCode": false
-   },
+   "metadata": {},
    "source": [
     "## Asking the maths library\n",
     "My computer tells me that $\\pi$ is *approximatively*"
@@ -20,11 +18,7 @@
   {
    "cell_type": "code",
    "execution_count": 1,
-   "metadata": {
-   "hideCode": false,
-   "hidePrompt": false,
-   "scrolled": true
-   },
+   "metadata": {},
    "outputs": [
     {
      "name": "stdout",
@@ -41,9 +35,7 @@
   },
   {
    "cell_type": "markdown",
-   "metadata": {
-   "hidePrompt": false
-   },
+   "metadata": {},
    "source": [
     "## Buffon's needle\n",
     "Applying the method of [Buffon's needle](https://en.wikipedia.org/wiki/Buffon%27s_needle_problem), we get the __approximation__"
@@ -52,11 +44,7 @@
   {
    "cell_type": "code",
    "execution_count": 2,
-   "metadata": {
-   "hideCode": false,
-   "hidePrompt": false,
-   "scrolled": true
-   },
+   "metadata": {},
    "outputs": [
     {
      "data": {
@@ -65,10 +53,7 @@
       ]
      },
      "execution_count": 2,
-     "metadata": {
-     "hideCode": false,
-     "hidePrompt": false,
-     },
+     "metadata": {},
      "output_type": "execute_result"
     }
    ],
@@ -83,9 +68,7 @@
   },
   {
    "cell_type": "markdown",
-   "metadata": {
-   "hideCode": false
-   },
+   "metadata": {},
    "source": [
     "## Using a surface fraction argument\n",
     "A method that is easier to understand and does not make use of the $\\sin$ function is based on the fact that if $X\\sim U(0,1)$ and $Y\\sim U(0,1)$, then $P[X^2+Y^2\\leq 1] = \\pi/4$ (see [\"Monte Carlo method\" on Wikipedia](https://en.wikipedia.org/wiki/Monte_Carlo_method)). The following code uses this approach:"
@@ -94,7 +77,9 @@
   {
    "cell_type": "code",
    "execution_count": 3,
-   "metadata": {},
+   "metadata": {
+    "scrolled": true
+   },
    "outputs": [
     {
      "data": {