The Geospektive website often refers to external background information in the context of its own teaching sequences.
If you try out the learning sequence on the topic of ‘Food security in Africa’, you will see a link to the ‘Global Hunger Index’ website (https://www.globalhungerindex.org/#map) at one point.

If you click on a specific country on this map, you will receive a wealth of background information, e.g. on the development of the GHI values or the data sources.
