diff --git a/sum23/lecture_materials/08_Lists/lec_08_lists_template.ipynb b/sum23/lecture_materials/08_Lists/lec_08_lists_template.ipynb
index d4263de556457540e7bdd731529959517d31422e..1cff2f54f950ec3dbeca0a49ad062d67c0e25603 100644
--- a/sum23/lecture_materials/08_Lists/lec_08_lists_template.ipynb
+++ b/sum23/lecture_materials/08_Lists/lec_08_lists_template.ipynb
@@ -137,6 +137,14 @@
     "print(grocery_list[len(grocery_list)])"
    ]
   },
+  {
+   "attachments": {},
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "#### Write loops that process lists"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,
@@ -194,6 +202,27 @@
     "How does Python differentiate between two different usages of `[]`?"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def longest_word(word_list):\n",
+    "    '''Given a list of strings, return the string with the longest length.\n",
+    "    If more than one, return the first one.'''\n",
+    "\n",
+    "    max_length = 0\n",
+    "    longest_word = None\n",
+    "\n",
+    "    return longest_word\n",
+    "\n",
+    "print(grocery_list)\n",
+    "print(longest_word(grocery_list))\n",
+    "print(longest_word([\"aaaa\", \"xyz\", \"hello\"]))\n",
+    "print(longest_word([]))"
+   ]
+  },
   {
    "attachments": {},
    "cell_type": "markdown",