Update Lecture1.ipynb

Update instructions

Lecture1.ipynb

@@ -240,7 +240,6 @@
     "import matplotlib.pyplot as plt  # Plotting\n",
     "import numpy as np  # Numerical operations\n",
     "%matplotlib inline\n",
-    "# Inline plotting for Jupyter notebooks\n",
     "\n",
     "x = np.arange(0, 10, 0.001) # x = 0 to 10 in steps of 0.001\n",
     "y = np.sin(x*x) # define your function\n",
@@ -782,7 +781,7 @@
     "id": "2D92BAYzciGa"
    },
    "source": [
-    "## 🚨 Exercise 1: Solid-state diffusion\n",
+    "## 🚨 Exercise 1\n",
     "\n",
     "```{admonition} Coding exercises\n",
     ":class: note\n",
@@ -905,7 +904,7 @@
    "source": [
     "```{admonition} Submission\n",
     ":class: note\n",
-    "When your notebook is complete, click on the download icon on the top right, select `.pdf`, save the file and upload it to MyDepartment. If you are using Google Colab, you have to print to pdf.\n",
+    "When your notebook is complete, click on the download icon on the top right, select `.ipynb`, save the file and upload it to Blackboard. If you are using Google Colab, you have to File -> Download and choose `.ipynb`.\n",
     "```"
    ]
   },