I have found plenty of class inspiration on Reddit.
Various subs have provided a new way to explain mode and median and great, intuitive data to teach correlation.
However, much as a reverse-coded item on a scale can be used to get to the opposite of what you are asking about, r/DataIsUgly is rife with examples of how NOT to do data as to teach how to create good data visualizations.
Very recently, I shared this example from r/DataIsUgly to illustrate why NOT to truncate the Y axis.
And...this sub is filled with people like us. People who love to proofread and notice data crimes. For example:
How to use it in class? Can your students figure out why these data visualizations are...less than optimal? Can they fix them? They could be a fun prompt for extra credit points or a discussion board.
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