diff --git a/module2/exo1/toy_notebook_fr.ipynb b/module2/exo1/toy_notebook_fr.ipynb
index db7ed243ea772f19862991f926d0b46fb3d578fb..07eda2f2aa8ff4fa9c69b29905ffbb1f9fe3d71f 100644
--- a/module2/exo1/toy_notebook_fr.ipynb
+++ b/module2/exo1/toy_notebook_fr.ipynb
@@ -36,16 +36,25 @@
     }
    ],
    "source": [
-    "from math import*\n",
+    "from math import *\n",
     "print(pi)"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## En utilisant la méthode des aiguilles de Buffon"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,
    "metadata": {},
    "outputs": [],
-   "source": []
+   "source": [
+    "Mais calculé avec laméthodedesaiguilles de Buffon, on obtiendrait commeapproximation:"
+   ]
   }
  ],
  "metadata": {