Merge pull request #64 from digitalearthafrica/feedback-edits

Feedback edits

docs/session_1/01_what_is_digital_earth_africa.ipynb

@@ -50,7 +50,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "For more details on the Digital Earth Africa program, visit the [Digital Earth Africa homepage](https://www.digitalearthafrica.org/){target=\"_blank\"}."
+    "For more details on the Digital Earth Africa program, visit the [Digital Earth Africa homepage](https://www.digitalearthafrica.org/). If you would like to learn more about Earth observations in general, take a look at [this summary document](https://www.oecd.org/environment/indicators-modelling-outlooks/Earth_Observation_for_Decision_Making.pdf) by the OECD."
    ]
   }
  ],

docs/session_5/02_vegetation_exercise.ipynb

@@ -459,9 +459,13 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "Congratulations! You have made your own vegetation change detection notebook. It is comparable to [the existing Sandbox vegetation change detection notebook](https://github.com/digitalearthafrica/deafrica-sandbox-notebooks/blob/master/Real_world_examples/Vegetation_change_detection.ipynb). The existing notebook may look daunting, but it includes many of the steps that you have just done!\n",
+    "Congratulations! You have made your own vegetation change detection notebook. It is comparable to [the existing Sandbox vegetation change detection notebook](https://docs.digitalearthafrica.org/en/latest/sandbox/notebooks/Real_world_examples/Vegetation_change_detection.html). The existing notebook may look daunting, but it includes many of the steps that you have just done! In addition to setting a 'before' and 'after' scene, the existing notebook:\n",
     "\n",
-    "You now understand how to structure a complete case study -- you can calculate a relevant band index and indentify meaningful changes in that index over time."
+    "* Plots some true-colour maps (RGB) to inspect the area of interest\n",
+    "* Quantifies change using statistical tests (Welch's *t*-test for areas of unequal variance)\n",
+    "* Identifies statistically significant change\n",
+    "\n",
+    "A difference plot, like the one we made above, is a good way to start. You can then decide if you need more complicated analysis or not. You now understand how to structure a complete case study — you can calculate a relevant band index and identify meaningful changes in that index over time."
    ]
   },
   {
@@ -477,7 +481,7 @@
     "\n",
     "The notebook has already been run, so you can read through it step by step. However, you may find it valuable to clear the outputs and run each cell step by step to see how it works. You can do this by clicking **Kernel -> Restart Kernel and Clear All Outputs**. When asked whether you want to restart the kernel, click **Restart**.\n",
     "\n",
-    "There are many similarities between the notebook you built in this session, and the existing Sandbox notebook. Maybe make a note of what is similar and what is different. If you have any questions about how the existing notebook works, please ask the instructors during a live session."
+    "There are many similarities between the notebook you built in this session, and the existing Sandbox notebook. Make a note of what is similar and what is different, and spend some time inspecting the different code. If you have any questions about how the existing notebook works, please ask the instructors during a [Live Session](../Events.ipynb)."
    ]
   }
  ],
@@ -497,7 +501,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.7.4"
+   "version": "3.6.9"
   }
  },
  "nbformat": 4,