diff --git a/notebooks/session_1.ipynb b/notebooks/session_1.ipynb
index 95815fc..1dde8a0 100644
--- a/notebooks/session_1.ipynb
+++ b/notebooks/session_1.ipynb
@@ -25,14 +25,25 @@
          "cell_type": "markdown",
          "metadata": {},
          "source": [
-            "For this session, we only need one agent in the simulation. To do so, the server can be started in the command line with the options `--n_agents 1` and `n_objects 0`.\n",
+            "For this session, we only need one agent in the simulation. To do so, the server can be started in the command line with the options `--n_agents 1` and `n_objects 1`.\n",
             "<!-- TODO: change this with file system once done !-->\n",
-            "<!-- TODO: set objects to 0 !-->\n",
+            "<!-- TODO: set objects to 0 !-->"
+         ]
+      },
+      {
+         "cell_type": "markdown",
+         "metadata": {},
+         "source": [
             "```bash\n",
             "python scripts/run_server.py --n_agents 1 --n_objects 0\n",
-            "```\n",
-            "\n",
-            "This time, check the `Visible wheels` and `Visible proxs` checkboxes under the **Visualization configurations**."
+            "```"
+         ]
+      },
+      {
+         "cell_type": "markdown",
+         "metadata": {},
+         "source": [
+            "This time, run the interface and check the `Visible wheels` and `Visible proxs` checkboxes under the **Visualization configurations**."
          ]
       },
       {
@@ -48,8 +59,9 @@
          "metadata": {},
          "outputs": [],
          "source": [
-            "from vivarium.controllers.notebook_controller import NotebookController\n",
             "import numpy as np\n",
+            "from vivarium.controllers.notebook_controller import NotebookController\n",
+            "\n",
             "controller = NotebookController()"
          ]
       },
@@ -424,7 +436,7 @@
       },
       {
          "cell_type": "code",
-         "execution_count": 26,
+         "execution_count": null,
          "metadata": {},
          "outputs": [],
          "source": [
@@ -448,7 +460,7 @@
          "name": "python",
          "nbconvert_exporter": "python",
          "pygments_lexer": "ipython3",
-         "version": "3.11.8"
+         "version": "3.10.12"
       }
    },
    "nbformat": 4,