diff --git a/module2/exo1/toy_notebook_fr.ipynb b/module2/exo1/toy_notebook_fr.ipynb
index ea1990f5d74c95524f4748a65f8b7cdc47d589dd..06ae3e830892f678e2eba9e368ad992e225a8d61 100644
--- a/module2/exo1/toy_notebook_fr.ipynb
+++ b/module2/exo1/toy_notebook_fr.ipynb
@@ -1,13 +1,25 @@
 {
  "cells": [
   {
-   "cell_type": "markdown",
+   "cell_type": "code",
+   "execution_count": null,
    "metadata": {},
+   "outputs": [],
    "source": [
-    "## Méthode des aiguilles de Buffon\n",
+    "import random\n",
+    "import math\n",
     "\n",
-    "Pour en savoir plus :  \n",
-    "[Expérience des aiguilles de Buffon (Wikipedia)](https://fr.wikipedia.org/wiki/Aiguille_de_Buffon)"
+    "def buffon_needle(n_drops=100000):\n",
+    "    hits = 0\n",
+    "    for _ in range(n_drops):\n",
+    "        y = random.random()\n",
+    "        theta = random.uniform(0, math.pi / 2)\n",
+    "        if y <= (math.sin(theta) / 2):\n",
+    "            hits += 1\n",
+    "    return (2 * n_drops) / hits\n",
+    "\n",
+    "pi_est = buffon_needle()\n",
+    "print(f\"Estimation de π par la méthode de Buffon : {pi_est}\")\n"
    ]
   }
  ],