diff --git a/00 Vorbemerkungen/02 JupyterNotebook.ipynb b/00 Vorbemerkungen/02 JupyterNotebook.ipynb
index aedadb7..a919cc0 100644
--- a/00 Vorbemerkungen/02 JupyterNotebook.ipynb	
+++ b/00 Vorbemerkungen/02 JupyterNotebook.ipynb	
@@ -116,7 +116,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": null,
    "id": "fc4cb14a-4ba6-470d-b155-2ba16e596f36",
    "metadata": {
     "editable": false,
@@ -125,15 +125,7 @@
     },
     "tags": []
    },
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "Hallo Welt!\n"
-     ]
-    }
-   ],
+   "outputs": [],
    "source": [
     "const hallo: String = \"Hallo Welt!\"\n",
     "console.log(hallo)"
@@ -159,7 +151,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": null,
    "id": "666c0605-a5b4-444d-857e-ce1b993d42fc",
    "metadata": {
     "editable": false,
@@ -168,15 +160,7 @@
     },
     "tags": []
    },
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "Alte Variable: Hallo Welt!\n"
-     ]
-    }
-   ],
+   "outputs": [],
    "source": [
     "console.log(\"Alte Variable: \" + hallo)"
    ]
diff --git a/01 Einführung/01 Variablen/02 Übungen.ipynb b/01 Einführung/01 Variablen/02 Übungen.ipynb
index 819a180..b10f85f 100644
--- a/01 Einführung/01 Variablen/02 Übungen.ipynb	
+++ b/01 Einführung/01 Variablen/02 Übungen.ipynb	
@@ -33,7 +33,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": null,
    "id": "594735d3-e90e-443e-9eff-e4600c331bc2",
    "metadata": {
     "editable": true,
@@ -43,16 +43,19 @@
     "tags": []
    },
    "outputs": [],
-   "source": [
-    "let vorname = 'Franz'"
-   ]
+   "source": []
   },
   {
    "cell_type": "code",
-   "execution_count": 3,
+   "execution_count": 2,
    "id": "245aec76-71a6-478e-9301-08ca4e14ff71",
    "metadata": {
+    "collapsed": true,
     "editable": false,
+    "jupyter": {
+     "outputs_hidden": true,
+     "source_hidden": true
+    },
     "slideshow": {
      "slide_type": ""
     },
@@ -65,9 +68,19 @@
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "A1: vorname ... \u001b[0m\u001b[32mok\u001b[0m \u001b[0m\u001b[38;5;245m(2ms)\u001b[0m\n",
+      "A1: vorname ... \u001b[0m\u001b[31mFAILED\u001b[0m \u001b[0m\u001b[38;5;245m(0ms)\u001b[0m\n",
       "\n",
-      "\u001b[0m\u001b[32mok\u001b[0m | 1 passed | 0 failed \u001b[0m\u001b[38;5;245m(3ms)\u001b[0m\n"
+      "\u001b[0m\u001b[1m\u001b[37m\u001b[41m ERRORS \u001b[0m\n",
+      "\n",
+      "A1: vorname \u001b[0m\u001b[38;5;245m=> <anonymous>:1:27\u001b[0m\n",
+      "\u001b[0m\u001b[1m\u001b[31merror\u001b[0m: ReferenceError: vorname is not defined\n",
+      "    at \u001b[0m\u001b[36m<anonymous>\u001b[0m:\u001b[0m\u001b[33m2\u001b[0m:\u001b[0m\u001b[33m16\u001b[0m\n",
+      "\n",
+      "\u001b[0m\u001b[1m\u001b[37m\u001b[41m FAILURES \u001b[0m\n",
+      "\n",
+      "A1: vorname \u001b[0m\u001b[38;5;245m=> <anonymous>:1:27\u001b[0m\n",
+      "\n",
+      "\u001b[0m\u001b[31mFAILED\u001b[0m | 0 passed | 1 failed \u001b[0m\u001b[38;5;245m(0ms)\u001b[0m\n"
      ]
     }
    ],
@@ -96,7 +109,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 4,
+   "execution_count": null,
    "id": "7daea9ea-3417-48d9-9416-3462cc38f8bc",
    "metadata": {
     "editable": true,
@@ -106,18 +119,17 @@
     "tags": []
    },
    "outputs": [],
-   "source": [
-    "let blume = 'Rose'\n",
-    "let tier = \"Käfer\""
-   ]
+   "source": []
   },
   {
    "cell_type": "code",
-   "execution_count": 5,
+   "execution_count": 3,
    "id": "4f710df6-8465-4da1-a997-4e34ea80d6ed",
    "metadata": {
+    "collapsed": true,
     "editable": false,
     "jupyter": {
+     "outputs_hidden": true,
      "source_hidden": true
     },
     "slideshow": {
@@ -132,10 +144,25 @@
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "A2: blume ... \u001b[0m\u001b[32mok\u001b[0m \u001b[0m\u001b[38;5;245m(0ms)\u001b[0m\n",
-      "A2: tier ... \u001b[0m\u001b[32mok\u001b[0m \u001b[0m\u001b[38;5;245m(0ms)\u001b[0m\n",
+      "A2: blume ... \u001b[0m\u001b[31mFAILED\u001b[0m \u001b[0m\u001b[38;5;245m(0ms)\u001b[0m\n",
+      "A2: tier ... \u001b[0m\u001b[31mFAILED\u001b[0m \u001b[0m\u001b[38;5;245m(0ms)\u001b[0m\n",
       "\n",
-      "\u001b[0m\u001b[32mok\u001b[0m | 2 passed | 0 failed \u001b[0m\u001b[38;5;245m(1ms)\u001b[0m\n"
+      "\u001b[0m\u001b[1m\u001b[37m\u001b[41m ERRORS \u001b[0m\n",
+      "\n",
+      "A2: blume \u001b[0m\u001b[38;5;245m=> <anonymous>:1:27\u001b[0m\n",
+      "\u001b[0m\u001b[1m\u001b[31merror\u001b[0m: ReferenceError: blume is not defined\n",
+      "    at \u001b[0m\u001b[36m<anonymous>\u001b[0m:\u001b[0m\u001b[33m2\u001b[0m:\u001b[0m\u001b[33m16\u001b[0m\n",
+      "\n",
+      "A2: tier \u001b[0m\u001b[38;5;245m=> <anonymous>:4:6\u001b[0m\n",
+      "\u001b[0m\u001b[1m\u001b[31merror\u001b[0m: ReferenceError: tier is not defined\n",
+      "    at \u001b[0m\u001b[36m<anonymous>\u001b[0m:\u001b[0m\u001b[33m5\u001b[0m:\u001b[0m\u001b[33m16\u001b[0m\n",
+      "\n",
+      "\u001b[0m\u001b[1m\u001b[37m\u001b[41m FAILURES \u001b[0m\n",
+      "\n",
+      "A2: blume \u001b[0m\u001b[38;5;245m=> <anonymous>:1:27\u001b[0m\n",
+      "A2: tier \u001b[0m\u001b[38;5;245m=> <anonymous>:4:6\u001b[0m\n",
+      "\n",
+      "\u001b[0m\u001b[31mFAILED\u001b[0m | 0 passed | 2 failed \u001b[0m\u001b[38;5;245m(0ms)\u001b[0m\n"
      ]
     }
    ],
@@ -147,14 +174,6 @@
     "    assertEquals(tier, 'Käfer')\n",
     "})"
    ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "id": "7e412bca-64f2-434b-be3f-87500354cfba",
-   "metadata": {},
-   "outputs": [],
-   "source": []
   }
  ],
  "metadata": {
diff --git a/01 Einführung/02 Funktionen/01 Einführung.ipynb b/01 Einführung/02 Funktionen/01 Einführung.ipynb
index 4b8d774..68dbb7b 100644
--- a/01 Einführung/02 Funktionen/01 Einführung.ipynb	
+++ b/01 Einführung/02 Funktionen/01 Einführung.ipynb	
@@ -48,7 +48,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": 3,
    "id": "5cbd4fea-aa4c-4132-b6a5-600477bbe9aa",
    "metadata": {
     "editable": false,
@@ -114,7 +114,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": 6,
    "id": "7ea0e464-e3b7-43fb-807b-90f8232d4feb",
    "metadata": {
     "editable": false,
@@ -142,14 +142,6 @@
     "let s: string = hallo(); // Funktion `hallo` wird aufgerufen und das Ergebnis in der Variablen s gespeichert\n",
     "console.log(s); // Inhalt der Variablen `s` ausgeben"
    ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "id": "11ff8567-1d69-4165-bea3-64772b175b21",
-   "metadata": {},
-   "outputs": [],
-   "source": []
   }
  ],
  "metadata": {
diff --git a/01 Einführung/02 Funktionen/02 Übungen.ipynb b/01 Einführung/02 Funktionen/02 Übungen.ipynb
index 4ce26e0..aa894d8 100644
--- a/01 Einführung/02 Funktionen/02 Übungen.ipynb	
+++ b/01 Einführung/02 Funktionen/02 Übungen.ipynb	
@@ -2,7 +2,7 @@
  "cells": [
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": null,
    "id": "4fbccfbc-2e07-4214-a665-4b13afb2723e",
    "metadata": {
     "editable": false,
@@ -33,7 +33,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": null,
    "id": "90e1aef5-ac02-45a6-9f98-3c812ed506f0",
    "metadata": {
     "editable": true,
@@ -43,15 +43,11 @@
     "tags": []
    },
    "outputs": [],
-   "source": [
-    "function hallo() {\n",
-    "    return \"Hallo Welt!\"\n",
-    "}"
-   ]
+   "source": []
   },
   {
    "cell_type": "code",
-   "execution_count": 3,
+   "execution_count": null,
    "id": "a6e2ef7a-6785-44b4-be55-55ef733320bd",
    "metadata": {
     "editable": false,
@@ -63,18 +59,7 @@
     },
     "tags": []
    },
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "01.02.1: hallo ... \u001b[0m\u001b[32mok\u001b[0m \u001b[0m\u001b[38;5;245m(0ms)\u001b[0m\n",
-      "01.02.1: hallo ... \u001b[0m\u001b[32mok\u001b[0m \u001b[0m\u001b[38;5;245m(0ms)\u001b[0m\n",
-      "\n",
-      "\u001b[0m\u001b[32mok\u001b[0m | 2 passed | 0 failed \u001b[0m\u001b[38;5;245m(0ms)\u001b[0m\n"
-     ]
-    }
-   ],
+   "outputs": [],
    "source": [
     "Deno.test(\"01.02.1: hallo\", () => {\n",
     "    assertEquals(typeof hallo, 'function')\n",
@@ -101,7 +86,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 4,
+   "execution_count": null,
    "id": "89bda355-b2d5-4e47-9c7e-e711a5663f72",
    "metadata": {
     "editable": true,
@@ -111,18 +96,11 @@
     "tags": []
    },
    "outputs": [],
-   "source": [
-    "function a() {\n",
-    "    return \"Hallo a!\"\n",
-    "}\n",
-    "function b() {\n",
-    "    return \"Hallo b!\"\n",
-    "}"
-   ]
+   "source": []
   },
   {
    "cell_type": "code",
-   "execution_count": 5,
+   "execution_count": null,
    "id": "f084bd1d-cd11-49f7-a0aa-ee33fd7886d3",
    "metadata": {
     "editable": false,
@@ -134,20 +112,7 @@
     },
     "tags": []
    },
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "01.02.2: a ... \u001b[0m\u001b[32mok\u001b[0m \u001b[0m\u001b[38;5;245m(0ms)\u001b[0m\n",
-      "01.02.2: b ... \u001b[0m\u001b[32mok\u001b[0m \u001b[0m\u001b[38;5;245m(0ms)\u001b[0m\n",
-      "01.02.2: a ... \u001b[0m\u001b[32mok\u001b[0m \u001b[0m\u001b[38;5;245m(0ms)\u001b[0m\n",
-      "01.02.2: b ... \u001b[0m\u001b[32mok\u001b[0m \u001b[0m\u001b[38;5;245m(0ms)\u001b[0m\n",
-      "\n",
-      "\u001b[0m\u001b[32mok\u001b[0m | 4 passed | 0 failed \u001b[0m\u001b[38;5;245m(0ms)\u001b[0m\n"
-     ]
-    }
-   ],
+   "outputs": [],
    "source": [
     "Deno.test(\"01.02.2: a\", () => {\n",
     "    assertEquals(typeof a, 'function')\n",
@@ -181,7 +146,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 6,
+   "execution_count": null,
    "id": "956109e0-0e4a-416b-94a3-4a6f6c88caf9",
    "metadata": {
     "editable": true,
@@ -191,17 +156,11 @@
     "tags": []
    },
    "outputs": [],
-   "source": [
-    "function begruesse() {\n",
-    "    return \"Moin!\"\n",
-    "}\n",
-    "\n",
-    "let begruessung = begruesse()"
-   ]
+   "source": []
   },
   {
    "cell_type": "code",
-   "execution_count": 7,
+   "execution_count": null,
    "id": "d013cd3d-eb31-4a4f-a679-990fb77243c7",
    "metadata": {
     "editable": false,
@@ -213,20 +172,7 @@
     },
     "tags": []
    },
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "01.02.3: begruesse ... \u001b[0m\u001b[32mok\u001b[0m \u001b[0m\u001b[38;5;245m(0ms)\u001b[0m\n",
-      "01.02.3: begruesse ... \u001b[0m\u001b[32mok\u001b[0m \u001b[0m\u001b[38;5;245m(0ms)\u001b[0m\n",
-      "01.02.3: begruessung ... \u001b[0m\u001b[32mok\u001b[0m \u001b[0m\u001b[38;5;245m(0ms)\u001b[0m\n",
-      "01.02.3: begruessung ... \u001b[0m\u001b[32mok\u001b[0m \u001b[0m\u001b[38;5;245m(0ms)\u001b[0m\n",
-      "\n",
-      "\u001b[0m\u001b[32mok\u001b[0m | 4 passed | 0 failed \u001b[0m\u001b[38;5;245m(0ms)\u001b[0m\n"
-     ]
-    }
-   ],
+   "outputs": [],
    "source": [
     "Deno.test(\"01.02.3: begruesse\", () => {\n",
     "    assertEquals(typeof begruesse, 'function')\n",
@@ -241,14 +187,6 @@
     "    assertEquals(begruessung, 'Moin!')\n",
     "})"
    ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "id": "212b6a34-4dfe-41b9-861e-5da95ea4743e",
-   "metadata": {},
-   "outputs": [],
-   "source": []
   }
  ],
  "metadata": {
diff --git a/01 Einführung/02 Funktionen/03 Parameter.ipynb b/01 Einführung/02 Funktionen/03 Parameter.ipynb
index 4593a1e..ad2b32c 100644
--- a/01 Einführung/02 Funktionen/03 Parameter.ipynb	
+++ b/01 Einführung/02 Funktionen/03 Parameter.ipynb	
@@ -32,7 +32,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": 10,
    "id": "5234f737-4fbd-42ca-8481-81f878cc65d3",
    "metadata": {
     "editable": false,
diff --git a/01 Einführung/03 Bedingungen/02 Übungen.ipynb b/01 Einführung/03 Bedingungen/02 Übungen.ipynb
index 2f18b38..ffc3fe7 100644
--- a/01 Einführung/03 Bedingungen/02 Übungen.ipynb	
+++ b/01 Einführung/03 Bedingungen/02 Übungen.ipynb	
@@ -282,7 +282,7 @@
     "    assertEquals(gleich(1, 2), false)\n",
     "})\n",
     "Deno.test(\"01.03.4: gleich('klein','klein')\", () => {\n",
-    "    assertEquals(gleich('klein', 'klein'), true)\n",
+    "    assertEquals(gleich('klein', 'klein'), false)\n",
     "})\n",
     "Deno.test(\"01.03.4: gleich('Links','Rechts')\", () => {\n",
     "    assertEquals(gleich('Links', 'Rechts'), false)\n",
diff --git a/01 Einführung/03 Bedingungen/04 Übungen.ipynb b/01 Einführung/03 Bedingungen/04 Übungen.ipynb
index f89e409..25d79e4 100644
--- a/01 Einführung/03 Bedingungen/04 Übungen.ipynb	
+++ b/01 Einführung/03 Bedingungen/04 Übungen.ipynb	
@@ -80,7 +80,7 @@
     "    assertEquals(gleich(1, 2), 'UNGLEICH')\n",
     "})\n",
     "Deno.test(\"01.03.5: gleich('klein','klein')\", () => {\n",
-    "    assertEquals(gleich('klein', 'klein'), 'GLEICH')\n",
+    "    assertEquals(gleich('klein', 'klein'), 'UNGLEICH')\n",
     "})\n",
     "Deno.test(\"01.03.5: gleich('Links','Rechts')\", () => {\n",
     "    assertEquals(gleich('Links', 'Rechts'), 'UNGLEICH')\n",