diff --git a/02_activities/assignments/assignment_1.ipynb b/02_activities/assignments/assignment_1.ipynb
index 72c8aec96..6924c2b0b 100644
--- a/02_activities/assignments/assignment_1.ipynb
+++ b/02_activities/assignments/assignment_1.ipynb
@@ -56,32 +56,87 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 5,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "True"
+      ]
+     },
+     "execution_count": 5,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "# For testing purposes, we will write our code in the function\n",
     "def anagram_checker(word_a, word_b):\n",
     "  # Your code here\n",
+    "  \"\"\"determine whether two stings are anagrams of each other.\n",
+    "\n",
+    "  args: \n",
+    "    word_a(str), word_b(str): two input string.\n",
+    "    \n",
+    "  returns:\n",
+    "    bool: True if the inputs are anagrams, otherwise False.\n",
+    "  \"\"\"\n",
+    "  # check if the words are the same length\n",
+    "  if len(word_a) != len(word_b):\n",
+    "    return(False)\n",
+    "  \n",
+    "  else:\n",
+    "    # set them to lower case\n",
+    "    word_a = word_a.lower()\n",
+    "    word_b = word_b.lower()\n",
+    "  \n",
+    "    # alphabetical sorting apply to both words \n",
+    "    word_a = sorted(word_a)\n",
+    "    word_b = sorted(word_b)\n",
+    "    return(word_a == word_b)\n",
     "\n",
     "# Run your code to check using the words below:\n",
-    "anagram_checker(\"Silent\", \"listen\")"
+    "anagram_checker(\"Silent\", \"listen\")\n",
+    "#help(anagram_checker)"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 6,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "False"
+      ]
+     },
+     "execution_count": 6,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "anagram_checker(\"Silent\", \"Night\")"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 7,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "True"
+      ]
+     },
+     "execution_count": 7,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "anagram_checker(\"night\", \"Thing\")"
    ]
@@ -97,31 +152,89 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 8,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "True"
+      ]
+     },
+     "execution_count": 8,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "def anagram_checker(word_a, word_b, is_case_sensitive):\n",
     "  # Modify your existing code here\n",
+    "  \"\"\"determine whether two stings are anagrams of each other.\n",
+    "\n",
+    "  args: \n",
+    "    word_a(str), word_b(str): two input string.\n",
+    "    is_case_sensitive(bool,optional): if True, character case is considered. \n",
+    "    \n",
+    "  returns:\n",
+    "    bool: True if the inputs are anagrams, otherwise False.\n",
+    "  \"\"\"\n",
+    "  # check if the words are the same length\n",
+    "  if len(word_a) != len(word_b):\n",
+    "    return(False)\n",
+    "\n",
+    "  else:\n",
+    "    # consider the \"is_case_sensitive\"\n",
+    "    if not is_case_sensitive: \n",
+    "        # set them to lower case\n",
+    "        word_a = word_a.lower()\n",
+    "        word_b = word_b.lower()\n",
+    "   \n",
+    "    # alphabetical sorting apply to both words \n",
+    "    word_a = sorted(word_a)\n",
+    "    word_b = sorted(word_b)\n",
+    "    return(word_a == word_b)\n",
     "\n",
     "# Run your code to check using the words below:\n",
-    "anagram_checker(\"Silent\", \"listen\", False) # True"
+    "anagram_checker(\"Silent\", \"listen\", False) # True\n",
+    "#help(anagram_checker)"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 9,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "False"
+      ]
+     },
+     "execution_count": 9,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "anagram_checker(\"Silent\", \"listen\", True) # False"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 10,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "False"
+      ]
+     },
+     "execution_count": 10,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "anagram_checker(\"Silent\", \"Listen\", True) # False"
    ]
@@ -139,7 +252,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "new-learner",
+   "display_name": "python-env (3.11.15)",
    "language": "python",
    "name": "python3"
   },
@@ -153,7 +266,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.11.8"
+   "version": "3.11.15"
   }
  },
  "nbformat": 4,