In the 21st century historians have increasingly portrayed the decade as a "pivot of change" in world history focusing especially on the political and economic upheavals. Check your 70s knowledge.
Find out if you are really familiar with the basics of Microsoft Excel by going through some basic questions and start building your knowledge profile.
If you want you can turn any Microsoft PowerPoint presentation into a video so you can play the presentation on a computer that doesn't have Microsoft Office installed.
Let's see if you are familiar with the very basic words of the German language. Go through the intuitive questionnaire and build up your knowledge profile.