diff --git a/your-code/lab_for_loops.ipynb b/your-code/lab_for_loops.ipynb
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+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Words"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "words = ['play', 'filling', 'bar', 'theatre', 'easygoing', 'date', 'lead', 'that', 'story',  'island']"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "**Print every word in upper case**"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "PLAY\n",
+      "FILLING\n",
+      "BAR\n",
+      "THEATRE\n",
+      "EASYGOING\n",
+      "DATE\n",
+      "LEAD\n",
+      "THAT\n",
+      "STORY\n",
+      "ISLAND\n"
+     ]
+    }
+   ],
+   "source": [
+    "# your code here\n",
+    "\n",
+    "for list_words in words:\n",
+    "    print(list_words.upper())"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "**Create a new list containing only words with 5 or more letters**"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "La palabra play tiene menos de 5 letras\n",
+      "La palabra bar tiene menos de 5 letras\n",
+      "La palabra date tiene menos de 5 letras\n",
+      "La palabra lead tiene menos de 5 letras\n",
+      "La palabra that tiene menos de 5 letras\n",
+      "\n",
+      "La lista final es: ['filling', 'theatre', 'easygoing', 'story', 'island']\n"
+     ]
+    }
+   ],
+   "source": [
+    "# your code here\n",
+    "listofwords= []\n",
+    "for list_words in words:\n",
+    "    if len(list_words) >= 5:\n",
+    "        listofwords.append(list_words)\n",
+    "    else:\n",
+    "        print(f\"La palabra {list_words} tiene menos de 5 letras\")\n",
+    "\n",
+    "print(f\"\\nLa lista final es: {listofwords}\" )"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "**Print the first word starting with \"t\"**"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 10,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "La primera palabra que empieza con 't' es: theatre\n"
+     ]
+    }
+   ],
+   "source": [
+    "# your code here\n",
+    "\n",
+    "for word in words:\n",
+    "    word = word.lower()\n",
+    "    if word.startswith(\"t\"):\n",
+    "       print(f\"La primera palabra que empieza con 't' es: {word}\")\n",
+    "       break "
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Numbers"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "**Create a list containing the square of every number from 1 to 10**"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 15,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "[1, 4, 9, 16, 25, 36, 49, 64, 81, 100]\n"
+     ]
+    }
+   ],
+   "source": [
+    "# your code here\n",
+    "import math as mt\n",
+    "number = []\n",
+    "a = 0\n",
+    "for i in range(1,11):\n",
+    "    a = i**2\n",
+    "    number.append(a)\n",
+    "number.sort()\n",
+    "print(number)\n",
+    "    "
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "**Print a list containing the square of every odd number from 1 to 10**"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 17,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "[1, 9, 25, 49, 81]\n"
+     ]
+    }
+   ],
+   "source": [
+    "# your code here\n",
+    "import math as mt\n",
+    "number = []\n",
+    "a = 0\n",
+    "for i in range(1,11):\n",
+    "    if i % 2 !=0:\n",
+    "        a = i**2\n",
+    "        number.append(a)\n",
+    "number.sort()\n",
+    "print(number)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "**Create a list with the squares of all multiples of 8 below 1000**"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "\n",
+      " [0, 64, 256, 576, 1024, 1600, 2304, 3136, 4096, 5184, 6400, 7744, 9216, 10816, 12544, 14400, 16384, 18496, 20736, 23104, 25600, 28224, 30976, 33856, 36864, 40000, 43264, 46656, 50176, 53824, 57600, 61504, 65536, 69696, 73984, 78400, 82944, 87616, 92416, 97344, 102400, 107584, 112896, 118336, 123904, 129600, 135424, 141376, 147456, 153664, 160000, 166464, 173056, 179776, 186624, 193600, 200704, 207936, 215296, 222784, 230400, 238144, 246016, 254016, 262144, 270400, 278784, 287296, 295936, 304704, 313600, 322624, 331776, 341056, 350464, 360000, 369664, 379456, 389376, 399424, 409600, 419904, 430336, 440896, 451584, 462400, 473344, 484416, 495616, 506944, 518400, 529984, 541696, 553536, 565504, 577600, 589824, 602176, 614656, 627264, 640000, 652864, 665856, 678976, 692224, 705600, 719104, 732736, 746496, 760384, 774400, 788544, 802816, 817216, 831744, 846400, 861184, 876096, 891136, 906304, 921600, 937024, 952576, 968256, 984064]\n"
+     ]
+    }
+   ],
+   "source": [
+    "# your code here\n",
+    "import math as mt\n",
+    "number = []\n",
+    "a = 0\n",
+    "for i in range(0,1000,8):\n",
+    "    a = i**2\n",
+    "    number.append(a)\n",
+    "number.sort()\n",
+    "print(number)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## People"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 22,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "people = [\n",
+    "    {\n",
+    "        \"name\": \"Juan\",\n",
+    "        \"age\": 34,\n",
+    "        \"n_kids\": 2\n",
+    "    },\n",
+    "    {\n",
+    "        \"name\": \"Pepe\",\n",
+    "        \"age\": 27,\n",
+    "        \"n_kids\": 0\n",
+    "    },\n",
+    "    {\n",
+    "        \"name\": \"Sonia\",\n",
+    "        \"age\": 41,\n",
+    "        \"n_kids\": 1\n",
+    "    },\n",
+    "    {\n",
+    "        \"name\": \"Lucía\",\n",
+    "        \"age\": 22,\n",
+    "        \"n_kids\": 2\n",
+    "    },\n",
+    "    {\n",
+    "        \"name\": \"Leo\",\n",
+    "        \"age\": 55,\n",
+    "        \"n_kids\": 5\n",
+    "    }\n",
+    "]"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "**How many people are there?**"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "5\n",
+      "[{'name': 'Juan', 'age': 34, 'n_kids': 2}, {'name': 'Pepe', 'age': 27, 'n_kids': 0}, {'name': 'Sonia', 'age': 41, 'n_kids': 1}, {'name': 'Lucía', 'age': 22, 'n_kids': 2}, {'name': 'Leo', 'age': 55, 'n_kids': 5}]\n"
+     ]
+    }
+   ],
+   "source": [
+    "# your code here\n",
+    "personas = []\n",
+    "for i in people:\n",
+    "    personas.append(i)\n",
+    "print(len(personas))\n"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "**How many people have kids**?"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "4\n"
+     ]
+    }
+   ],
+   "source": [
+    "# your code here\n",
+    "personas_con_hijos= 0\n",
+    "\n",
+    "for i in people:\n",
+    "    if i[\"n_kids\"] > 0:\n",
+    "        personas_con_hijos +=1\n",
+    "print(personas_con_hijos)\n"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "**How many kids do they have in total?**"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 36,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "10\n"
+     ]
+    }
+   ],
+   "source": [
+    "# your code here\n",
+    "personas_con_hijos= 0\n",
+    "\n",
+    "for i in people:\n",
+    "    if i[\"n_kids\"] > 0:\n",
+    "        personas_con_hijos = personas_con_hijos + i[\"n_kids\"]\n",
+    "print(personas_con_hijos)\n"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "**In a year's time, names ending with \"a\" will have an extra kid. Create a list of dictionaries with people's info in a year's time**"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "[{'name': 'Juan', 'age': 34, 'n_kids': 2},\n",
+       " {'name': 'Pepe', 'age': 27, 'n_kids': 0},\n",
+       " {'name': 'Sonia', 'age': 41, 'n_kids': 2},\n",
+       " {'name': 'Lucía', 'age': 22, 'n_kids': 3},\n",
+       " {'name': 'Leo', 'age': 55, 'n_kids': 5}]"
+      ]
+     },
+     "execution_count": 41,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "# your code here\n",
+    "un_hijo_mas = 0\n",
+    "nuevo_diccionario = []\n",
+    "\n",
+    "for i in people:\n",
+    "    lista_actualizada = i.copy()\n",
+    "    \n",
+    "    if lista_actualizada[\"name\"].endswith(\"a\"):\n",
+    "        lista_actualizada[\"n_kids\"] +=1\n",
+    "        \n",
+    "    nuevo_diccionario.append(lista_actualizada)\n",
+    "\n",
+    "nuevo_diccionario"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "base",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.13.5"
+  },
+  "toc": {
+   "base_numbering": 1,
+   "nav_menu": {},
+   "number_sections": false,
+   "sideBar": true,
+   "skip_h1_title": false,
+   "title_cell": "Table of Contents",
+   "title_sidebar": "Contents",
+   "toc_cell": false,
+   "toc_position": {},
+   "toc_section_display": true,
+   "toc_window_display": true
+  },
+  "varInspector": {
+   "cols": {
+    "lenName": 16,
+    "lenType": 16,
+    "lenVar": 40
+   },
+   "kernels_config": {
+    "python": {
+     "delete_cmd_postfix": "",
+     "delete_cmd_prefix": "del ",
+     "library": "var_list.py",
+     "varRefreshCmd": "print(var_dic_list())"
+    },
+    "r": {
+     "delete_cmd_postfix": ") ",
+     "delete_cmd_prefix": "rm(",
+     "library": "var_list.r",
+     "varRefreshCmd": "cat(var_dic_list()) "
+    }
+   },
+   "types_to_exclude": [
+    "module",
+    "function",
+    "builtin_function_or_method",
+    "instance",
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+ "nbformat": 4,
+ "nbformat_minor": 4
+}