diff --git a/notebooks/OKIMONO_sample_notebook.ipynb b/notebooks/OKIMONO_sample_notebook.ipynb
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+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "id": "1268ce9d-22ee-46b9-8973-1b96a2aea2b2",
+   "metadata": {},
+   "source": [
+    "## 練習用Notebook\n",
+    "\n",
+    "これは練習用のNotebookです。\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "id": "52b74e5d-8478-4a66-ab31-dab4733a5087",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "14"
+      ]
+     },
+     "execution_count": 1,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "# Pythonのコードです\n",
+    "\n",
+    "data = [1, 2, 3]\n",
+    "squared_sum = sum([value ** 2 for value in data]) # 二乗和を計算\n",
+    "\n",
+    "squared_sum"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "271bc56a-c835-4075-9cad-d803a99dd1cd",
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "default:Python",
+   "language": "python",
+   "name": "conda-env-default-py"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.9.12"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}