Different self-assessment activities are being developed to allow you to test your understanding of the concepts introduced in this portal. They are mainly of four types:
for the identification on a sketch or a diagram, Drag and drop onto image questions appears very suitable. It is simple to use: you operate by simple drag and drop;
gap-fill exercises require a little more concentration, but can be very useful in ensuring that difficult concepts are well understood;
categorization or matching or ordering exercises are a good complement to the previous two activities: you arrange elements by categories and thus learn to distinguish them;
finally, the quiz allow you to test the knowledge acquired in a fairly broad way, but are not very user-friendly tools.